Hair Follicle Testing

Hair Drug Testing

Hair follicle drug abuse testing offers up to a 90-day window for detection of drug use and a convenient collection process that can be performed almost anywhere.

Specimen Collection

The collector obtains a 100-milligram sample of hair (90 to 120 strands) cut at the scalp. The collector secures the hair sample in foil and completes chain of custody documentation in preparation for shipment to the testing laboratory.

Since hair samples are obtained in full view of the collector, the process minimizes the likelihood of sample adulteration or specimen substitution. We offer hair specimen collections in many of our specimen collection sites located throughout the U.S. Our extensive network offers your employees convenient access to a Labcorp collection site.

Testing Process

Using strategic partners, Labcorp offers initial screening tests performed by immunoassay with confirmation of presumptive positive screens by mass spectrometry. Results for specimens that screen negative for all drugs are generally available within 48 to 72 hours after specimens are received at the laboratory. Results for confirmation testing of presumptive positive screens are usually available within an additional 72 hours.

Drugs Detected

• Amphetamine/methamphetamine/ecstasy

• Marijuana metabolite

• Cocaine and metabolites

• Opiates (codeine, morphine, 6-acetyl morphine)

• Oxycodone (oxymorphone, hydrocodone, hydromorphone)

• Phencyclidine (PCP)