Hair Testing for a 90-Day Drug Use History

Introduction

Hair testing for drugs of abuse is the only drug-testing method available that provides up to a 90-day drug use history. This makes hair testing an ideal solution for pre-employment and random testing protocols.

Using FDA-cleared testing reagents, this lab-based test offers the advantages of easy specimen collection and highly accurate results that meet the same reference standards as urine testing. In addition, there are no known methods for sample adulteration (hair washing will not dilute the sample). Because specimen collection can be directly observed, the risk of adulteration is even further reduced.

Negative results are reported within 72 hours of receipt at the laboratory, and positive results are confirmed using gas chromatography/mass spectrometry (GC/MS) or gas chromatography/mass spectrometry/mass spectrometry (GC/MS/MS) within 72-96 hours. Hair testing is also forensically defensible.

When compared with urine specimen testing, hair testing provides up to 2.5 times the number of positives and a longer detection window.

Contents of Examination

•	Amphetamines (including Ecstasy)
•	Cocaine
•	Marijuana
•	Opiates
•	Phencyclidine (PCP)

Six-panel test:

Analyte		Screen Cutoff		Confirmation Cutoff
Amphetamines   Cocaine   Opiates   PCP   THC   THC-COOH		300 pg/mg   300 pg/mg   500 pg/mg   300 pg/mg   N/A   1 pg/mg		300 pg/mg   300 pg/mg   500 pg/mg   300 pg/mg   5 pg/mg   0.1 pg/mg