Hair Testing Process and Certifications

Our hair drug testing panels detect commonly abused drugs and yield reliable results that are defensible in court, meaning you can screen with confidence.

Methodology

A two-tiered testing process ensures that positive results are re-checked and confirmed. The initial hair specimen is screened using enzyme-linked immunosorbent assay (ELISA) technology, a proven methodology for routine screening.

Confirmation

Any samples that are presumptively positive in the initial tests are confirmed with another portion of the hair sample using either the traditional GC/MS confirmation method or GC/MS/MS technology. 

Certifications

Quest Diagnostics Employer Solutions testing locations hold and maintain Substance Abuse and Mental Health Services Administration (SAMSHA), Certified Authorization Professional (CAP) and Clinical Laboratory Improvement Amendments of 1988 (CLIA-88) certification as well as any applicable state licensure.  

Standard 5-panel test:

Drug Class Screen Cutoff Confirmation Cutoff
Amphetamines

Cocaine

Opiates*

PCP

THC-COOH
300 pg/mg

300 pg/mg

500 pg/mg

300 pg/mg

1 pg/mg
300 pg/mg

300 pg/mg

500 pg/mg

300 pg/mg

0.1 pg/mg

*Confirmatory testing is available for standard or expanded opiates.

Click below for additional resources about hair testing for drugs of abuse.

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To get started with Quest Diagnostics today, call 800-877-7484 or contact us online.