goMDnow provides professional hair drug testing services designed to identify patterns of drug use over a longer detection period than urine testing. Hair drug testing is commonly used for pre-employment screening, background verification, and non-DOT workplace programs that require a broader view of substance use history.
With access to nationwide certified collection sites, goMDnow makes hair follicle drug testing accurate, compliant, and convenient for employers and individuals across the United States.
A hair drug test analyzes a small sample of hair to detect drug metabolites that are deposited into the hair shaft through the bloodstream. Unlike urine testing, which identifies recent drug use, hair testing provides a longer detection window typically up to 90 days.
Because of this extended detection period, hair drug testing is frequently used when employers or agencies want insight into long-term substance use behavior rather than short-term or recent exposure.
Hair drug testing is valued for its ability to provide a broader and more tamper-resistant view of drug use history. It is especially useful for roles involving trust, safety, or long-term responsibility.
Hair drug testing is not currently accepted by the U.S. Department of Transportation (DOT) for federally regulated testing programs. DOT regulations require urine drug testing under 49 CFR Part 40.
Hair drug testing is widely used for non-DOT workplace programs, internal company policies, and supplemental screening outside of DOT requirements.
goMDnow offers standard and expanded hair drug testing panels depending on employer policy or compliance needs.
Standard Hair Drug Test (5-Panel)
Screens for marijuana (THC), cocaine, opiates/opioids, amphetamines (including methamphetamine), and PCP.
Expanded Hair Drug Panels
Expanded panels may include benzodiazepines, barbiturates, methadone, oxycodone, and other substances as required by employer policy or legal guidance.
Hair drug testing through goMDnow follows a clear and professional process designed to ensure accuracy and defensibility.
Hair drug testing is frequently used for pre-employment screening, background drug checks, non-DOT workplace programs, safety-sensitive hiring decisions, and certain legal or court-related testing when DOT rules do not apply.
Employers and individuals rely on goMDnow for hair drug testing because we combine nationwide access, certified laboratories, and clear reporting with professional support at every step of the process.
Our services are designed to support compliance, accuracy, and defensible results without unnecessary delays or confusion.
How far back does a hair drug test detect drug use?
Hair drug tests can detect drug use for up to 90 days, depending on hair growth and length.
Is hair drug testing more accurate than urine testing?
Hair testing provides a longer detection window, while urine testing detects recent use. Each method serves a different purpose.
Can hair drug testing be used for DOT compliance?
No. DOT regulations require urine drug testing. Hair drug testing is used for non-DOT programs only.
Does hair color or texture affect results?
Certified laboratories use validated methods designed to minimize bias related to hair characteristics.
Do I need an appointment?
Yes. Appointments ensure proper collection procedures and accurate documentation.
If you need reliable hair drug testing for pre-employment screening or non-DOT workplace compliance, goMDnow is here to help.
980-655-4455 or schedule online to get started with professional, compliant hair drug testing nationwide.
