7 Panel Hair Follicle Drug Test: Reliable Detection for Employers and Courts

What is a 7 panel hair follicle drug test?

A 7 panel hair follicle drug test is a laboratory analysis that identifies the presence of seven different drug classes in a small sample of hair. This test detects drug metabolites deposited in the hair shaft, providing a detection window of up to 90 days. The seven drug classes typically tested include cocaine, marijuana (THC), opiates, amphetamines, methamphetamines, phencyclidine (PCP), and benzodiazepines.

AMH Nationwide does not process tests directly but provides lab orders and directs the requester to one of five national lab networks: Quest Diagnostics, LabCorp, Omega Labs, United States Drug Testing Labs, and ExperTox. All negative and non-negative results are reviewed by certified Medical Review Officers as part of standard protocol.

How long can a 7 panel hair follicle drug test detect drug use?

The 7 panel hair follicle drug test can detect drug use approximately 7 to 90 days after consumption. Hair grows about half an inch per month, and a standard test analyzes 1.5 inches of hair closest to the scalp, representing roughly three months of drug history. This long detection window makes it useful for employers, courts, and probation officers who require a retrospective view of drug use.

Short-term or one-time drug use is less likely to be detected compared to chronic use, but even single use can sometimes be identified depending on hair growth and drug incorporation.

How is the 7 panel hair follicle drug test collected and processed?

Collection involves cutting a small hair sample, usually about 100-120 strands, close to the scalp from the crown area. This sample is then sent to one of AMH Nationwide’s partner labs for analysis. The labs use immunoassay screening followed by confirmatory testing with gas chromatography-mass spectrometry (GC-MS) or liquid chromatography-tandem mass spectrometry (LC-MS/MS) to ensure accuracy.

AMH Nationwide directs all testing and collection logistics but does not allow direct online ordering. Requesters must call (877) 731-6362 to initiate testing and receive a lab order form to present at a collection site.

How does the 7 panel hair follicle drug test compare to a 9 panel hair follicle drug test?

The 9 panel hair follicle drug test includes all seven drugs tested in the 7 panel, plus two additional drug classes, often barbiturates and methadone or MDMA (ecstasy). This broader panel provides more comprehensive drug screening but may cost more and is used when more extensive testing is required.

Both tests offer the same detection window and collection method. The choice depends on the requester’s needs and the substances of concern.

Can the 7 panel hair follicle drug test be affected by passive exposure or attempts to beat the test?

Passive exposure to drugs, such as environmental smoke, is unlikely to produce a positive result on a 7 panel hair follicle drug test because the test detects drug metabolites incorporated into the hair shaft, not external contamination. Laboratories also wash hair samples before testing to remove external residues.

Attempts to cheat or beat the test through hair treatments or shampoos are generally ineffective. The labs’ use of advanced confirmatory methods and review by certified Medical Review Officers ensures the reliability of results.

Who typically orders a 7 panel hair follicle drug test?

Employers use the 7 panel hair follicle drug test to screen employees for recent and past drug use, especially for safety-sensitive positions. Courts and probation agencies order this test to monitor individuals under supervision. Individuals may also request the test for personal knowledge or pre-employment screening.

AMH Nationwide facilitates testing for all these purposes by providing lab orders and directing clients to certified collection sites nationwide.

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