How does a 5 panel hair drug test work
How a 5 Panel Hair Drug Test Works to Detect Drug Use Over Time
How does a 5 panel hair drug test work? This test detects five common drug classes by analyzing hair samples for drug metabolites incorporated during hair growth. It provides a detection window of up to 90 days. Testing is performed by national labs with results reviewed by a certified Medical Review Officer. Call (877) 731-6362.
What is a 5 panel hair drug test?
A 5 panel hair drug test screens hair samples for five drug categories: marijuana, cocaine, opiates, amphetamines, and phencyclidine (PCP). It identifies drug metabolites embedded in the hair shaft, reflecting drug use over the previous 90 days. This method is non-DOT compliant but widely used for employment, legal, and personal testing.
How does a 5 panel hair drug test work from collection to results?
The process begins with a lab order from AMH Nationwide directing the requester to a nearby collection site from one of five national lab networks: Quest Diagnostics, LabCorp, Omega Labs, United States Drug Testing Labs, or ExperTox. A small hair sample is collected, usually from the crown of the head, and sent to the lab for analysis.
At the lab, hair samples undergo preparation and testing using advanced instrumentation to detect specific drug metabolites. The lab reports results only after a certified Medical Review Officer reviews all non-negative findings to ensure accuracy and rule out legitimate medical explanations.
What drugs are detected and what is the detection window?
The 5 panel hair test detects:
• THC (marijuana)
• Cocaine and metabolites
• Opiates including morphine and codeine
• Amphetamines including methamphetamine
• PCP (phencyclidine)
Hair grows approximately 0.5 inches per month, so a standard 1.5 inch sample reflects drug use over about 90 days. This makes hair testing effective for identifying long-term drug use rather than recent or one-time use.
Is the 5 panel hair drug test reliable and can it be affected by passive exposure?
The 5 panel hair test is highly reliable due to laboratory confirmation techniques and Medical Review Officer oversight. Passive exposure to drugs like marijuana is unlikely to produce a positive result because metabolites must be incorporated into the hair follicle from bloodstream exposure, not external contamination.
Hair treatments like bleaching or dyeing may affect test results but do not guarantee a negative. The test’s sensitivity and specificity are maintained through strict lab protocols and federally aligned standards.
Ready to Schedule a 5 Panel Hair Drug Test?
Contact AMH Nationwide to obtain a lab order and find a nearby collection site within our five national lab networks. Call (877) 731-6362 for assistance.
Who typically orders a 5 panel hair drug test?
Employers often order 5 panel hair tests for pre-employment or ongoing workplace drug screening, especially when a longer detection window is needed compared to urine testing. Courts and probation agencies may also require hair testing for monitoring compliance. Individuals may request this test for personal reasons.
AMH Nationwide provides lab orders and directs clients to collection sites but does not offer online ordering. Call (877) 731-6362 to get started.
Is the 5 panel hair drug test accepted for DOT safety-sensitive positions?
No. The Department of Transportation (DOT) requires urine testing under the federally certified urine protocol (49 CFR Part 40) for safety-sensitive roles. Hair testing is not DOT-approved but is accepted for non-DOT regulated employment or legal testing where longer detection windows are preferred.
Common Questions
Results typically take 3 to 5 business days after the lab receives the hair sample. The process includes lab analysis and review by a certified Medical Review Officer.
Hair tests are better suited for detecting repeated or chronic drug use over 90 days. One-time use may be less reliably detected depending on timing and hair growth.
Hair color can slightly influence drug incorporation, but modern testing methods compensate for this to maintain accuracy across hair types.
This test targets illicit and commonly abused drugs, not prescribed medications unless they fall into the tested drug classes and are reported by the requester.
Hair collection is painless and non-invasive. A small sample is cut close to the scalp, usually from the crown area.
If hair is too short, alternative specimen types like urine or oral fluid testing may be recommended. Contact AMH Nationwide for guidance.
Ready to get started?
AMH Nationwide provides the lab order and arranges collection nationwide. Every non-negative result reviewed by a certified Medical Review Officer. Call (877) 731-6362 or contact us.