Hair testing is a process in which hair specimens are analyzed for illegal drugs.  Since hair growth is fed by the bloodstream, the ingestion of drugs of abuse is revealed by analyzing a small sample of hair. Our testing method measures the drug molecules embedded inside the hairshaft, eliminating external contamination as a source of a positive test result. Hair testing results cannot be altered with shampoos, bleaches or other external chemicals.

In order for the sample to confirm positive at the established cut-off level, the metabolite of the drug will only be present if the donor has physically ingested the drug(s) detected.  

Why use Hair Testing rather than Urinalysis?

When compared to the more traditional forms of testing, i.e. urine testing, hair samples can detect a longer period of drug use.  With urine, most drugs are undetectable within 2-3 days after use, with the exception of marijuana, which may be detected for a slightly longer period of time.  After the 2-3 day period, a donor will test negative and slip through your screening process.  With hair samples, the only time limitation for detecting drug usage is imposed by the length of the donor’s hair.  Each ½ inch of hair provides a 30-day history of drug use.  The standard for the industry is to test 1.5 inches, which provides a 90-day history of the donor’s drug use. 

Benefits of Hair Testing versus Urinalysis  

• Hair testing permits the detection of substance usage for a period limited only by the length of the hair  sample, typically 90 days, compared to 2-3 days with urinalysis.
• Unlike urinalysis, the hair-test sample cannot be adulterated or substituted.
• Collection is simple and safe – without the hazards associated with the handling of body fluids.
• Results available in 24 to 48 hours upon arrival in the laboratory.
• Cost is very competitive with other testing methods.               

Drugs Detectable using Hair Drug Testing  

• Cocaine (Cocaine & Benzoylecgonine)
• Marijuana (Cannabis)
• Opiates (Codeine, Morphine & 6-Monacteyl Morphine),
• Methamphetamine, (Meth/amphetamine & Ecstasy),
• Phencyclidine (PCP)

Implementing A Hair Drug Testing Program

We provide everything required to successfully conduct a Hair Drug Testing program for your company or clinic. Please contact one of our customer care team to discuss the options available to you.

Hair Follicle Diagram