Quest Diagnostics standard screen usually requires a cosmetically undetectable lock of hair preferably snipped from the back of the head, just below the crown. In general, the amount needed equates to a single row of hairs approximately one (1) centimeter wide.
Drug abuse in the workplace puts employers at a risk of increased accidents, increased absenteeism, decreased productivity, and higher insurance costs. Hair testing, like all drug testing methodologies, helps to mitigate these risks by screening out applicants and employees who use drugs.
Hair testing for drugs of abuse is the only drug testing method available that provides up to a 90-day drug use history. When compared with urine testing, hair testing tends to provide a greater number of positives due to its longer detection window. Hair testing requires a small sample of hair that is collected under direct supervision without any invasion of privacy. It is an excellent option for pre-employment and random drug testing programs.
Quest Diagnostics tests for amphetamines (amphetamine, methamphetamine, MDMA and MDA), opiates (codeine, morphine and 6-monoacetylmorphine) or “expanded” opiates (which includes semi-synthetic opiates), cocaine (and cocaine metabolites), marijuana metabolite (THC carboxylic acid metabolite), and PCP (phencyclidine).
We have not found any adulterants that can beat a hair drug test at this time. Moreover, the risk is minimized because every hair collection is observed.
Calling a hair test a hair follicle test is a common misnomer. The hair follicle is actually the pocket, below the scalp, from which the hair strand grows. During a hair drug test collection, the hair is cut as close to the scalp as possible, so only the strands of hair above the scalp is tested and not the actual hair follicle. True hair follicle testing requires the hair to be “plucked” rather than cut which can lead to extreme donor discomfort.
Read more FAQs.
Get started
To speak to a representative, please call 1.800.877.7484 or click below to complete our form
Products and services
Products and services
-
Hair Drug Testing & Screening -
Benefits of Drug Testing Hair vs. Urine -
Hair Testing Certifications & Cutoff Levels -
Hair Specimen Collections for Drug Testing -
Hair Drug Screening Facts & Information -
Oral Drug Testing & Screening -
Benefits of Oral Fluid Drug Screening -
Oral Fluid Testing Certifications & Cutoff Levels -
Oral Fluid Specimen Collections -
Oral Drug Screening Facts & Information -
Oral-Eze® Swab Drug Test -
Specimen Validity Testing -
Urine testing -
Urine Testing Overview -
Urine Specimen Collection for Drug Tests -
Urine Testing Certifications & Cutoff Levels -
Urine DOT drug test -
Urine testing FAQs -
Benefits of Drug Testing with Us -
Industry focused drug screening solutions
- Site map
- Privacy Notices
- Terms
- Contact us
- Language assistance / non-discrimination
- Asistencia de idiomas / Aviso de no discriminación
- 語言協助 / 不歧視通知
- Privacy Shield
- Accessibility
- Your Privacy Choices
Quest, Quest Diagnostics, any associated logos, and all associated Quest Diagnostics registered or unregistered trademarks are the property of Quest Diagnostics. All third-party marks—® and ™—are the property of their respective owners. © 2023 Quest Diagnostics Incorporated. All rights reserved. Image content features models and is intended for illustrative purposes only.