Hair testing analyzes a hair sample for parent drugs and their metabolites. A hair specimen, collected from a donor's head or body, is sent to the laboratory and is screened for illicit substances
Does hair color effect results?
Hair color is determined by the amount of melanin in the hair. It has been shown experimentally, through actual hair samples, as well as determined in court that hair color has no significant impact on results.
What drugs can we test for with hair?
Our preferred lab can test for cocaine, marijuana, opiates (codeine, morphine & 6-acetylmorphine,), amphetamines (amphetamine, methamphetamine, MDMA, MDA), and phencyclidine (PCP). The extended opiates panel adds oxycodone, oxymorphone, hydrocodone, and hydromorphone.
How effective is hair testing?
Our clients regularly report finding five times as many users compared to laboratory-based urine testing programs.
What time period does hair testing cover?
The typical length of head hair tested is
1 1/2 inches from the root end. Since the
average growth rate of human head hair
is approximately 1/2 inch per month a hair
analysis covers an approximate 90 day
time frame. This time frame is an
approximation only since an individual's
actual hair growth rate may vary from the average.
Does body hair give the same
type of results as head hair?
Body hair can be used for testing. However, while body hair is generally acknowledged as representing a more distant time frame than head hair, the approximate time period cannot be identified due to the high variability of growth rates.
How soon after use can a drug be detected in hair?
It takes approximately 5-10 days from the time of drug use for the hair containing drug to grow above the scalp where it can be collected.