Wondering what a polygraph costs in South Carolina? This guide explains the factors that shape a lie detector test price so you can plan before you book.
A standard lie detector test with LieDetectorTest.com in South Carolina starts at $850, all inclusive. This guide sets out exactly what we charge at all 5 of our South Carolina testing offices, what the fee covers, and what does — and does not — change the price.
TL;DR — The Short Version
- A standard lie detector test with LieDetectorTest.com in South Carolina costs $850 to $1,500 depending on which of our 5 South Carolina offices you book — all inclusive, with a $100 deposit to book. A couple test for two people starts at $1,600 in total.
- All polygraph examiners in South Carolina must be licensed by SLED under the Polygraph Examiners Act (Title 40, Chapter 53) — always verify this before booking.
- South Carolina does not have state-level employee polygraph protection laws, so the federal EPPA applies to private employers.
- Polygraph results are not generally admissible in South Carolina courts, though the Supreme Court in State v. Council declined to adopt a per se inadmissibility rule.
- The APA meta-analysis of 38 studies found single-issue polygraph techniques achieve 89% decision accuracy.
Who This Guide Is For
- South Carolina residents considering a private polygraph exam for personal matters
- Attorneys seeking polygraph testing for criminal defense or civil case strategy
- Law enforcement agencies needing pre-employment or criminal investigation polygraphs
- Couples seeking relationship clarity through infidelity polygraph testing
- Employers investigating workplace theft under federal EPPA guidelines
- Sex offender supervision programs requiring PCSOT exams
How Much Does a Lie Detector Test Cost in South Carolina?
Our South Carolina Prices
LieDetectorTest.com has 5 polygraph testing offices across South Carolina. A standard test — one person, one issue — costs from $850 to $1,500, depending on which office you book. Whichever office you choose, the figure you are quoted is the complete fee, not a starting point: the pre-test assessment, the examination itself, chart analysis, your same-day verbal result and your written report are all inside it.
You reserve an appointment with a $100 deposit. It comes off your total, and if we cannot offer you a suitable appointment — or your case turns out not to be suitable for polygraph testing — it is refunded in full. The initial consultation costs nothing, and nothing is added to the price afterwards.
South Carolina Price List
| What you are booking | South Carolina price | What it covers |
|---|---|---|
| Standard test One person, one issue | $850–$1,500 | A private single-issue examination covering up to three relevant questions. About two hours in the office from start to finish. |
| Couple test Two people, one session | $1,600–$2,800 total for two | Both people examined separately and privately in the same session, each with their own questions and their own written report. Cheaper than booking two standard tests. |
| Group test Three or more people | $650–$1,300 per person | A reduced per-person rate applied automatically from the third person. Everyone is examined privately and everyone gets their own report. |
| Booking deposit Paid online | $100 | Deducted from your total. Refunded in full if we cannot book you or your case is not suitable. |
The gap between our cheapest and most expensive South Carolina office reflects local examiner availability, travel and venue costs — not a difference in how the examination is run. Every office follows the same standards, uses the same validated APA techniques and produces the same written report.
What the Fee Includes
- The pre-test assessment. A private interview in which your examiner reviews your case, agrees the exact wording of every question with you, and confirms you are suitable for testing.
- The examination itself. Multiple chart collections run by an examiner trained to APA standards, using validated APA techniques.
- Scoring and analysis. Numerical scoring of the charts after the test, not an on-the-spot impression.
- Your result on the day. Your examiner tells you the outcome verbally before you leave.
- A full written report within 48 hours, setting out the questions asked, the technique used and the conclusion.
- A private, appointment-only office. A controlled testing room — never a car park, a hotel lobby or your kitchen table unless you have specifically booked in-home testing.
What Changes the Price — and What Does Not
Which office you book is the main variable in South Carolina. Each office sets its own rate around local examiner availability, travel and venue costs, and the rate is fixed — you see the exact figure for your chosen office before you confirm anything.
How many people are tested is the second. Two people booked together as a couple test cost less than two standard tests, and a group of three or more moves to the per-person group rate automatically.
Whether one examination is enough is the third. A single test covers up to three relevant questions on one issue. If your case spans genuinely separate issues, it needs separate examinations, and each is charged as its own test. Your examiner will tell you at the consultation stage if that applies to you, before you have paid anything beyond the deposit.
What does not change the price is the subject matter. An infidelity test, a theft investigation, a false-allegation defence test and a pre-employment integrity test all cost the same at the same office. There is no surcharge for a sensitive subject, no separate charge for the written report, and no travel fee when you come to one of our offices.
Lie Detector Test Prices by City in South Carolina
Every South Carolina testing office and its all-inclusive price. These are the figures you pay — there is nothing added on top.
| Location | One person | Couple | Group (per person) |
|---|---|---|---|
| Charleston | $1,500 | $2,800 | $1,300 |
| Columbia | $1,300 | $2,500 | $1,200 |
| Greenville | $850 | $1,600 | $650 |
| Hilton Head | $1,500 | $2,800 | $1,300 |
| Rock Hill | $900 | $1,700 | $850 |
Book a test in South Carolina → See every South Carolina office →
South Carolina Polygraph Licensing and Regulations
SLED Licensing Requirements
South Carolina has one of the most structured polygraph licensing frameworks in the nation, administered entirely by the South Carolina Law Enforcement Division (SLED). The SLED Polygraph Unit regulates polygraph licensure for both government and private examiners across the state [5]Verified SLED Investigative Services — Polygraph Unit
Confirms SLED Polygraph Unit supports all criminal justice agencies, regulates licensure, and provides training for government examiners.
To obtain a South Carolina polygraph examiner's license, an applicant must complete an application, pass a written exam, conduct 150 polygraph exams supervised by a SC licensed polygraph examiner, and pass a SLED review of those 150 exams [6]Verified SLED's Polygraph Unit Provides Services to Law Enforcement Agencies
Confirms SLED licensing requires 150 supervised exams, written exam, and SLED review. Additional qualifications include graduating from a SLED-approved polygraph examiners' course (or completing 12 months of internship training as an alternative), holding a baccalaureate degree or equivalent investigative experience, and furnishing a $5,000 surety bond [7]Verified 2024 South Carolina Code — Section 40-53-70: Qualifications of Licensees
Confirms SC examiner licensing qualifications including education, internship, exam, and $5,000 surety bond requirements [8]Verified South Carolina Polygraph Examiners Bond ($5,000)
Confirms South Carolina Polygraph Examiners are required under Act No. 1487 of 1972 to file a $5,000 surety bond.
The Polygraph Examiners Act was originally established under Act No. 1487 of the 1972 Acts of the General Assembly of South Carolina. Licenses must be renewed annually, and examiners must maintain their surety bond coverage at all times [7]Verified 2024 South Carolina Code — Section 40-53-70: Qualifications of Licensees
Confirms SC examiner licensing qualifications including education, internship, exam, and $5,000 surety bond requirements. This rigorous process ensures South Carolina consumers can trust that any licensed examiner has demonstrated competency through extensive supervised experience.
For a comparison of how other states handle polygraph regulation, see our guides on Virginia polygraph licensing and the Arizona Polygraph Association.
Penalties for Unlicensed Practice
South Carolina takes unlicensed polygraph practice seriously. Any person who violates the Polygraph Examiners Act — including anyone who falsely states or represents that they are a polygraph examiner or qualified to apply instrumentation for deception detection — is guilty of a misdemeanor, punishable by a fine of $100 to $1,000 and/or imprisonment of up to six months [9]Verified South Carolina Polygraph Examiners Act — Penalties (Section 40-53-250)
Confirms unlicensed polygraph practice is a misdemeanor with fines of $100–$1,000 and/or up to 6 months imprisonment. These penalties apply in addition to any other remedies available under the law.
This strong enforcement mechanism protects consumers from unqualified operators and maintains the professional integrity of polygraph testing in South Carolina.
SCAPE: The State Professional Association
The South Carolina Association of Polygraph Examiners (SCAPE) is a not-for-profit corporation that serves South Carolina's licensed polygraph community [3]Verified South Carolina Association of Polygraph Examiners (SCAPE)
Confirms SCAPE is a not-for-profit corporation with mission to maintain ethical and professional standards for SC examiners. SCAPE's mission is to assist in establishing and maintaining ethical and professional standards for South Carolina polygraph examiners [3]Verified South Carolina Association of Polygraph Examiners (SCAPE)
Confirms SCAPE is a not-for-profit corporation with mission to maintain ethical and professional standards for SC examiners.
SCAPE was originally formed in the early 1980s and was dissolved later that same decade, not coincidentally with the passage of the Employee Polygraph Protection Act. The organization was reconvened in 2000 [10]Verified Focus on the South Carolina Association of Polygraph Examiners
Confirms SCAPE founding in early 1980s, dissolution, reconvening in 2000, and Frank Faulk as SC's first examiner circa 1949. Frank Faulk of SLED was South Carolina's first polygraph examiner, beginning his work in approximately 1949, and was elected as the first president of SCAPE in the early 1980s [10]Verified Focus on the South Carolina Association of Polygraph Examiners
Confirms SCAPE founding in early 1980s, dissolution, reconvening in 2000, and Frank Faulk as SC's first examiner circa 1949.
SCAPE typically holds two training seminars per year, plus a third annual Tri-State Conference held on a rotating basis in coordination with the Georgia Polygraph Association (GPA) and the North Carolina Polygraph Association (NCPA) [11]Verified SCAPE Training and Tri-State Conference
Confirms SCAPE holds training conferences in coordination with Georgia and North Carolina polygraph associations. This cross-state collaboration reflects the region's commitment to maintaining the highest polygraph standards. Learn more about similar state associations in our Minnesota Polygraph Association guide and New Jersey Polygraph Examiners Association guide.
Employee Polygraph Protection in South Carolina
Federal EPPA Coverage
South Carolina does not have a state-level employee polygraph protection statute. As a result, the federal Employee Polygraph Protection Act (EPPA), which became law on December 27, 1988, governs all private-sector polygraph use in the state [12]Verified Employee Polygraph Protection Act (EPPA) — 29 CFR Part 801
Confirms EPPA became effective December 27, 1988, prohibiting most private employers from using lie detector tests [13]Verified Employee Polygraph Protection Act — Wikipedia
Confirms EPPA exempts federal, state, and local government employers and certain security/pharmaceutical firms.
The EPPA prohibits most private employers from using any lie detector tests either for pre-employment screening or during the course of employment [12]Verified Employee Polygraph Protection Act (EPPA) — 29 CFR Part 801
Confirms EPPA became effective December 27, 1988, prohibiting most private employers from using lie detector tests. Federal, state, and local government employers are exempted from the Act [13]Verified Employee Polygraph Protection Act — Wikipedia
Confirms EPPA exempts federal, state, and local government employers and certain security/pharmaceutical firms. The law carries a $10,000 penalty for each violation [14]Verified Employee Polygraph Protection Act (EPPA) — American Polygraph Association
Confirms $10,000 penalty per EPPA violation and government agency exemptions.
For a deeper dive into how the EPPA works in practice, see our guide on EPPA in New Jersey.
Exemptions for South Carolina Employers
While the EPPA broadly restricts polygraph use in private employment, several important exemptions apply in South Carolina:
Government agencies at all levels — federal, state, and local — are fully exempt, which is why South Carolina law enforcement agencies regularly use polygraph tests for pre-employment screening [13]Verified Employee Polygraph Protection Act — Wikipedia
Confirms EPPA exempts federal, state, and local government employers and certain security/pharmaceutical firms.
Private employers may request a polygraph test if the test is administered in connection with an ongoing investigation involving economic loss or injury to the employer's business, such as theft, embezzlement, or sabotage. The employee must have had access to the property under investigation, and the employer must have reasonable suspicion of the employee's involvement [15]Verified EPPA: The Fine Print
Confirms EPPA exemptions for employees suspected of workplace economic loss incidents. This exemption is particularly relevant for warehouse theft investigations and construction site theft cases.
Businesses whose primary purpose involves providing armored car personnel, security personnel, or pharmaceutical companies also have limited exemptions for pre-employment polygraph screening [13]Verified Employee Polygraph Protection Act — Wikipedia
Confirms EPPA exempts federal, state, and local government employers and certain security/pharmaceutical firms. Even under these exemptions, polygraph results cannot be the sole basis for adverse employment action [15]Verified EPPA: The Fine Print
Confirms EPPA exemptions for employees suspected of workplace economic loss incidents.
Polygraph Admissibility in South Carolina Courts
State v. Council and Current Legal Standards
South Carolina law does not categorically prohibit polygraph admissibility, but in practice courts almost always exclude the results. The pivotal case is State v. Council (335 S.C., 515 S.E.2d 508), in which the South Carolina Supreme Court declined to adopt a per se inadmissibility rule for polygraph evidence [16]Verified Are Polygraphs Admissible in Court in South Carolina?
Confirms South Carolina Supreme Court in State v. Council declined per se inadmissibility rule for polygraphs [17]Verified State v. Council — South Carolina Supreme Court (335 S.C., 515 S.E.2d 508)
Confirms State v. Council citation (515 S.E.2d 508) and South Carolina's approach to expert testimony admissibility.
Instead, the court established that polygraph admissibility is evaluated under Rule 702 of the South Carolina Rules of Evidence and the Jones factors — considerations derived from State v. Jones (1979) that address the reliability and relevance of scientific evidence [18]Verified Robert v. State — South Carolina Court of Appeals (2000)
Confirms Council established Jones factors for evaluating polygraph admissibility under SCRE Rule 702. South Carolina's approach closely mirrors the principles outlined in the federal Daubert standard, emphasizing the trial judge's role as a gatekeeper to ensure the reliability and relevance of expert evidence [19]Verified South Carolina Expert Witness Admissibility Rules
Confirms SC approach mirrors Daubert principles with trial judge as gatekeeper for expert evidence reliability.
In rare circumstances, polygraph evidence may be admitted if both parties stipulate in writing before the test and the trial judge exercises discretion to admit the results. Such admissions remain extremely rare.
Strategic Value Beyond Court Admissibility
Even when polygraph results are not admitted as evidence in court, they remain extremely valuable tools. Defense attorneys in South Carolina frequently rely on polygraph results as investigative tools to guide case strategy. Polygraph examinations can highlight inconsistencies, support other evidence, and help attorneys evaluate the credibility of their clients and witnesses.
Polygraph results can also be strategically useful for bond reduction arguments, charge determination discussions, and plea negotiations. In an era of increasing digital manipulation, the value of physiological truth verification continues to grow — learn more about why in our article on deepfakes and trust.
Private citizens also use polygraph services in South Carolina for personal matters including relationship concerns, family disputes, and proving innocence in non-legal contexts. These private examinations give individuals peace of mind and can be instrumental in resolving personal conflicts.
Polygraph Accuracy and What to Expect
Scientific Accuracy of Modern Polygraph Testing
The American Polygraph Association's comprehensive meta-analysis examined 38 studies that satisfied rigorous qualitative and quantitative requirements, encompassing 32 different samples and 45 experiments, with 3,723 examinations scored by 295 scorers [1]Verified Polygraph Validity Research
Confirms APA meta-analysis showing 89% single-issue accuracy from 38 studies with 3,723 examinations. The results showed that single-issue diagnostic testing techniques produced an aggregated decision accuracy of 89%, with a confidence interval of 83% to 95% [1]Verified Polygraph Validity Research
Confirms APA meta-analysis showing 89% single-issue accuracy from 38 studies with 3,723 examinations. Multi-issue techniques produced an aggregated accuracy of 85% [1]Verified Polygraph Validity Research
Confirms APA meta-analysis showing 89% single-issue accuracy from 38 studies with 3,723 examinations.
The APA Standards of Practice set demanding thresholds: evidentiary techniques must demonstrate at least 90% accuracy, while investigative techniques must achieve at least 80% accuracy [20]Verified APA Standards of Practice
Confirms APA requires 90%+ accuracy for evidentiary techniques and 80%+ for investigative techniques. These validated techniques form the foundation of all professional polygraph testing conducted in South Carolina.
Research also demonstrates that the cognitive cost of lying is measurable. A study published in Frontiers in Psychology found that frequent liars showed only a 53 ms lie-effect during testing, compared to 239 ms for truth-tellers, but critically, these training effects did not generalize to unpracticed items [21]Verified Learning to Lie: Effects of Practice on the Cognitive Cost of Lying
Confirms frequent liars showed 53 ms lie-effect vs 239 ms for truth-tellers, and training effects did not generalize to unpracticed items. This means that even practiced deception leaves detectable physiological signatures. Additionally, mental countermeasures — covert attempts to defeat polygraph testing — can be successfully identified during examination procedures [22]Verified Confirmed Mental Countermeasure Case in Costa Rica
Confirms mental countermeasures can be successfully identified during polygraph examination procedures.
For those interested in how technology is evolving alongside traditional polygraph methods, see our comparison of AI lie detection vs. polygraph testing.
What Happens During a Polygraph Examination
A professional polygraph examination typically lasts between 1.5 and 3 hours, depending on the complexity of the issue being tested. The process consists of three distinct phases:
Pre-Test Phase (45–90 minutes): The examiner explains the testing process, reviews the examinee's rights, gathers relevant background information, and formulates the specific test questions. Every question is reviewed with the examinee before the actual test begins — there are no surprise questions.
In-Test Phase (30–45 minutes): Sensors are attached to measure physiological responses including cardiovascular activity, respiratory patterns, and electrodermal (sweat gland) activity. The examiner asks the previously reviewed questions across multiple chart collections to ensure reliability.
Post-Test Phase (15–30 minutes): The examiner analyzes the collected data, renders an opinion, and discusses the results with the examinee. A written report may be provided immediately or within 24–48 hours.
Polygraph testing accommodates diverse needs. Research has documented practical approaches for adapting examination procedures to accommodate examinees with hearing and speech disabilities, ensuring accessibility for all [23]Verified Testing a Deaf Mute Examinee in Costa Rica
Documents practical approaches for adapting polygraph procedures for examinees with hearing and speech disabilities. If relationship concerns are motivating your test, our guide on lie detector tests in sexual addiction therapy provides additional context.
Law Enforcement Polygraph Use in South Carolina
SLED Polygraph Unit
The SLED Polygraph Unit serves as the backbone of government polygraph services in South Carolina. The unit supports the investigative needs of local, state, and federal criminal justice agencies through state-of-the-art equipment and time-tested polygraph examination techniques [5]Verified SLED Investigative Services — Polygraph Unit
Confirms SLED Polygraph Unit supports all criminal justice agencies, regulates licensure, and provides training for government examiners. The Polygraph Unit also conducts pre-employment and criminal polygraph examinations for government entities [5]Verified SLED Investigative Services — Polygraph Unit
Confirms SLED Polygraph Unit supports all criminal justice agencies, regulates licensure, and provides training for government examiners.
The SLED Polygraph Unit consists of three headquarters examiners and only provides polygraph exams at the request of government agencies [24]Verified SLED Polygraph Unit Composition
Confirms SLED Polygraph Unit consists of three headquarters examiners and only serves government agency requests. Beyond conducting examinations, the unit assists government polygraph examiners by providing internships and training to elevate their expertise to the highest level possible [5]Verified SLED Investigative Services — Polygraph Unit
Confirms SLED Polygraph Unit supports all criminal justice agencies, regulates licensure, and provides training for government examiners.
For those interested in government careers requiring polygraph clearance, our polygraph for government contractors guide covers what to expect.
Pre-Employment Polygraph Requirements in SC Law Enforcement
Polygraph examinations are a standard requirement in South Carolina law enforcement hiring. The South Carolina Department of Public Safety (SCDPS) requires all state trooper candidates to pass a polygraph examination as part of the selection process [25]Verified SCDPS Selection Process
Confirms South Carolina DPS requires polygraph examination as part of state trooper hiring process. After passing written exams and physical ability tests, candidates are given a date to report for their polygraph examination [25]Verified SCDPS Selection Process
Confirms South Carolina DPS requires polygraph examination as part of state trooper hiring process.
The employment process to become a state trooper is described as one of the most rigorous and challenging in law enforcement [26]Verified SC Highway Patrol Employment Process
Confirms the state trooper employment process is one of the most rigorous in law enforcement. All qualified applicants must participate in an extensive background investigation that includes a credit check, criminal history check, driving history, drug use history, employer and reference checks, a polygraph examination, and an interview board [27]Verified State Trooper Job Posting — South Carolina
Confirms polygraph examination is required as part of extensive background investigation for state trooper candidates.
Multiple South Carolina law enforcement agencies beyond SCDPS require polygraph examinations as part of their hiring process, including agencies in Charleston, Columbia, Greenville County, Beaufort County, Sumter, and Goose Creek [28]Verified Goose Creek Police Officer Recruiting
Confirms SC municipal police departments require polygraph examination by licensed examiner for hiring [29]Verified SCAPE Member Directory
Provides directory of licensed polygraph examiners across South Carolina from law enforcement and private practice. Some municipal police departments, such as Goose Creek, specifically require candidates to submit to a polygraph examination conducted by a licensed examiner [28]Verified Goose Creek Police Officer Recruiting
Confirms SC municipal police departments require polygraph examination by licensed examiner for hiring. For more about how polygraph fits into law enforcement careers, see our guide on Maryland corrections hiring.
Protecting Your Investment: Getting the Best Value
What Your Fee Should Include
When booking a polygraph test in South Carolina, ensure you understand exactly what is included in the quoted price. A comprehensive polygraph fee should cover:
A thorough pre-test consultation to discuss your case and formulate appropriate questions. The complete in-test examination using validated APA techniques. Professional analysis of the physiological data collected. A verbal explanation of results immediately following the test. A written report documenting the examination and conclusions.
Some examiners charge additional fees for detailed written reports suitable for court or attorney use, travel to off-site locations, weekend or evening appointments, and court testimony or deposition appearance. Always clarify these potential additional costs before committing.
For a broader perspective on polygraph pricing nationwide, see our Utah pricing guide and Louisiana pricing guide.
Red Flags to Watch For
Protecting yourself from substandard polygraph services is essential. Watch for these warning signs:
No SLED license: Any examiner operating in South Carolina without a valid SLED license is breaking the law [2]Verified South Carolina Code of Laws — Title 40, Chapter 53: Polygraph Examiners Act (Section 40-53-60)
Confirms SC law requiring SLED licensure for all polygraph examiners including city, county, and state employees. Ask for the license number and verify it independently.
Extremely short exam times: A credible polygraph exam should last at least 90 minutes. Any test that takes less than an hour likely cuts critical corners in the pre-test interview or data collection phases.
No professional association membership: While not legally required, membership in organizations like SCAPE, APA, or AAPP indicates ongoing professional development and adherence to ethical standards [3]Verified South Carolina Association of Polygraph Examiners (SCAPE)
Confirms SCAPE is a not-for-profit corporation with mission to maintain ethical and professional standards for SC examiners.
Refusal to discuss technique: Reputable examiners will explain which validated technique they use and why it is appropriate for your specific situation.
The consequences of false confessions in high-pressure interrogation settings underscore the importance of working with ethical, properly trained examiners. The Norfolk Four case documented how four wrongfully convicted sailors passed polygraph tests but were falsely told they failed, leading to false confessions during extended 8–11 hour interrogations [30]Verified 5 Costs and Consequences of Deception, Coercion, and False Confessions: The Norfolk Four
Documents Norfolk Four case where sailors passed polygraph tests but were falsely told they failed, leading to false confessions. This case highlights why choosing a professional, licensed examiner who follows APA protocols is critical.
For a comprehensive guide to protecting yourself, read our article on polygraph after divorce and polygraph after rehab.
Where to Get a Polygraph Test in South Carolina
Book Your South Carolina Polygraph Exam
We offer professional polygraph testing at multiple locations across South Carolina, staffed by examiners trained to APA standards who are fully licensed by SLED. All examinations use validated techniques and include a comprehensive pre-test interview, in-test data collection, analysis, and a written report with results delivered within 24–48 hours.
Our South Carolina testing locations include Charleston, Columbia, Greenville, Hilton Head, and Rock Hill. Each location offers confidential testing in a professional office environment designed to ensure the most accurate results possible.
To view all available locations and pricing, visit our South Carolina locations page. Ready to schedule? Book your polygraph test today or contact us with any questions about your specific situation.
Whether you are dealing with infidelity concerns, need testing for legal strategy purposes, or require a workplace investigation, our experienced examiners are ready to help you get to the truth.
Pros
- South Carolina has strong examiner licensing requirements through SLED, ensuring consumer protection
- SCAPE and Tri-State Conference provide robust professional development for SC examiners
- APA-validated techniques achieve 89% accuracy for single-issue examinations
- Multiple testing locations available across the state from Charleston to Greenville
- Both law enforcement and private practice examiners serve the state's diverse testing needs
- Evening and weekend scheduling is often available from private examiners
Cons
- Polygraph results are rarely admitted in South Carolina courts without prior stipulation from both parties
- South Carolina lacks state-level employee polygraph protection beyond federal EPPA coverage
- SLED Polygraph Unit only serves government agencies — private citizens must hire private examiners
Frequently Asked Questions
Are polygraph examiners required to be licensed in South Carolina?
Yes. Under the South Carolina Polygraph Examiners Act (Title 40, Chapter 53), all polygraph examiners — including city, county, and state employees — must hold a license issued by SLED [2]Verified South Carolina Code of Laws — Title 40, Chapter 53: Polygraph Examiners Act (Section 40-53-60)
Confirms SC law requiring SLED licensure for all polygraph examiners including city, county, and state employees. To obtain a license, applicants must complete a SLED-approved polygraph course, conduct 150 supervised examinations, pass a written exam, and furnish a $5,000 surety bond [6]Verified SLED's Polygraph Unit Provides Services to Law Enforcement Agencies
Confirms SLED licensing requires 150 supervised exams, written exam, and SLED review [7]Verified 2024 South Carolina Code — Section 40-53-70: Qualifications of Licensees
Confirms SC examiner licensing qualifications including education, internship, exam, and $5,000 surety bond requirements. Practicing without a license is a misdemeanor punishable by fines of $100–$1,000 and/or up to 6 months imprisonment [9]Verified South Carolina Polygraph Examiners Act — Penalties (Section 40-53-250)
Confirms unlicensed polygraph practice is a misdemeanor with fines of $100–$1,000 and/or up to 6 months imprisonment.
How much does a lie detector test cost in South Carolina?
A standard single-issue lie detector test in South Carolina with LieDetectorTest.com costs between $850 and $1,500, depending on which of our 5 South Carolina offices you book. A couple test — two people examined separately in the same session — starts at $1,600 in total, and groups of three or more are charged from $650 per person. Every price is all inclusive — the pre-test assessment, the examination, chart analysis, a same-day verbal result and a written report within 48 hours are all covered. You book with a $100 deposit, which comes off your total. See the full South Carolina price list by city or book your examination.
Can my employer in South Carolina require me to take a polygraph test?
Most private employers cannot require a polygraph test under the federal Employee Polygraph Protection Act (EPPA), which became law in 1988 [12]Verified Employee Polygraph Protection Act (EPPA) — 29 CFR Part 801
Confirms EPPA became effective December 27, 1988, prohibiting most private employers from using lie detector tests. Government employers at all levels are exempt from the EPPA [13]Verified Employee Polygraph Protection Act — Wikipedia
Confirms EPPA exempts federal, state, and local government employers and certain security/pharmaceutical firms. Private employers may request a polygraph in limited circumstances, such as during an ongoing investigation of workplace theft where the employee had access and there is reasonable suspicion [15]Verified EPPA: The Fine Print
Confirms EPPA exemptions for employees suspected of workplace economic loss incidents. Violations carry a $10,000 penalty per incident [14]Verified Employee Polygraph Protection Act (EPPA) — American Polygraph Association
Confirms $10,000 penalty per EPPA violation and government agency exemptions.
Are polygraph results admissible in South Carolina courts?
South Carolina law does not categorically prohibit polygraph admissibility, but courts almost always exclude the results in practice. In State v. Council, the Supreme Court declined to adopt a per se inadmissibility rule, instead establishing that admissibility is evaluated under Rule 702 and the Jones factors at the trial judge's discretion [16]Verified Are Polygraphs Admissible in Court in South Carolina?
Confirms South Carolina Supreme Court in State v. Council declined per se inadmissibility rule for polygraphs [19]Verified South Carolina Expert Witness Admissibility Rules
Confirms SC approach mirrors Daubert principles with trial judge as gatekeeper for expert evidence reliability. Both parties must typically stipulate in writing before the test for results to have any chance of admission.
How long does a polygraph examination take?
A standard polygraph examination lasts between 1.5 and 3 hours. This includes a pre-test interview (45–90 minutes) where the examiner explains the process and formulates questions, the in-test phase (30–45 minutes) where physiological data is collected, and the post-test phase where results are analyzed and discussed. Complex cases involving multiple issues may require additional time.
How accurate are polygraph tests?
The APA's comprehensive meta-analysis of 38 qualified studies found that single-issue diagnostic techniques produce an aggregated decision accuracy of 89%, with a confidence interval of 83%–95% [1]Verified Polygraph Validity Research
Confirms APA meta-analysis showing 89% single-issue accuracy from 38 studies with 3,723 examinations. The APA requires evidentiary techniques to demonstrate at least 90% accuracy [20]Verified APA Standards of Practice
Confirms APA requires 90%+ accuracy for evidentiary techniques and 80%+ for investigative techniques. When conducted by a properly trained, licensed examiner using validated techniques, polygraph testing provides highly reliable results that are far superior to unaided human lie detection, which averages only about 54% accuracy [1]Verified Polygraph Validity Research
Confirms APA meta-analysis showing 89% single-issue accuracy from 38 studies with 3,723 examinations.
What is SCAPE and why does it matter?
SCAPE (South Carolina Association of Polygraph Examiners) is a not-for-profit corporation that establishes and maintains ethical and professional standards for South Carolina polygraph examiners [3]Verified South Carolina Association of Polygraph Examiners (SCAPE)
Confirms SCAPE is a not-for-profit corporation with mission to maintain ethical and professional standards for SC examiners. Originally formed in the early 1980s, dissolved, and reconvened in 2000, SCAPE holds multiple training seminars per year and coordinates a Tri-State Conference with the Georgia and North Carolina associations [10]Verified Focus on the South Carolina Association of Polygraph Examiners
Confirms SCAPE founding in early 1980s, dissolution, reconvening in 2000, and Frank Faulk as SC's first examiner circa 1949 [11]Verified SCAPE Training and Tri-State Conference
Confirms SCAPE holds training conferences in coordination with Georgia and North Carolina polygraph associations. Choosing a SCAPE member ensures your examiner meets high professional standards and maintains continuing education.
Where can I book a lie detector test in South Carolina?
We offer professional polygraph testing at five locations across South Carolina: Charleston, Columbia, Greenville, Hilton Head, and Rock Hill. All examiners are trained to APA standards and SLED-licensed. You can view all locations and book online at our booking page or contact us directly. Results are typically provided within 24–48 hours of your examination.
Sources & References
Confirms APA meta-analysis showing 89% single-issue accuracy from 38 studies with 3,723 examinations
Confirms SC law requiring SLED licensure for all polygraph examiners including city, county, and state employees
Confirms SCAPE is a not-for-profit corporation with mission to maintain ethical and professional standards for SC examiners
Confirms full SCAPE membership requires SC license, bachelor's degree or equivalent, and 30 hours continuing education every two years
Confirms SLED Polygraph Unit supports all criminal justice agencies, regulates licensure, and provides training for government examiners
Confirms SLED licensing requires 150 supervised exams, written exam, and SLED review
Confirms SC examiner licensing qualifications including education, internship, exam, and $5,000 surety bond requirements
Confirms South Carolina Polygraph Examiners are required under Act No. 1487 of 1972 to file a $5,000 surety bond
Confirms unlicensed polygraph practice is a misdemeanor with fines of $100–$1,000 and/or up to 6 months imprisonment
Confirms SCAPE founding in early 1980s, dissolution, reconvening in 2000, and Frank Faulk as SC's first examiner circa 1949
Confirms SCAPE holds training conferences in coordination with Georgia and North Carolina polygraph associations
Confirms EPPA became effective December 27, 1988, prohibiting most private employers from using lie detector tests
Confirms EPPA exempts federal, state, and local government employers and certain security/pharmaceutical firms
Confirms $10,000 penalty per EPPA violation and government agency exemptions
Confirms EPPA exemptions for employees suspected of workplace economic loss incidents
Confirms South Carolina Supreme Court in State v. Council declined per se inadmissibility rule for polygraphs
Confirms State v. Council citation (515 S.E.2d 508) and South Carolina's approach to expert testimony admissibility
Confirms Council established Jones factors for evaluating polygraph admissibility under SCRE Rule 702
Confirms SC approach mirrors Daubert principles with trial judge as gatekeeper for expert evidence reliability
Confirms APA requires 90%+ accuracy for evidentiary techniques and 80%+ for investigative techniques
Confirms frequent liars showed 53 ms lie-effect vs 239 ms for truth-tellers, and training effects did not generalize to unpracticed items
Confirms mental countermeasures can be successfully identified during polygraph examination procedures
Documents practical approaches for adapting polygraph procedures for examinees with hearing and speech disabilities
Confirms SLED Polygraph Unit consists of three headquarters examiners and only serves government agency requests
Confirms South Carolina DPS requires polygraph examination as part of state trooper hiring process
Confirms the state trooper employment process is one of the most rigorous in law enforcement
Confirms polygraph examination is required as part of extensive background investigation for state trooper candidates
Confirms SC municipal police departments require polygraph examination by licensed examiner for hiring
Provides directory of licensed polygraph examiners across South Carolina from law enforcement and private practice
Documents Norfolk Four case where sailors passed polygraph tests but were falsely told they failed, leading to false confessions
Foundational research relevant to incorporating base rate and cost analysis into deception detection evaluation
To see real South Carolina figures, find a lie detector test near you and compare current pricing near you.