| Hair drug testing is quite accurate. Dependent on the length of the hair strand and the concentration and frequency of drug use it could go back as long as 6 months.
What are my chances of being hair drug tested?
No one can give you an absolute answer to that question. But, hair drug testing has grown in popularity even though it is relatively more expensive. The primary reasons for this are that the hair drug test is hard to beat, the hair drug test is less invasive and the hair drug test can detect drug usage over a greater amount of time. Another reason is that hair drug testing is not affected by a brief abstinence of drug use. See hair drug testing, Drug test detection times, Drug testing cutoff levels for more information.
Good for the NIDA 5: Marijuana (THC), Cocaine, Amphetamines, Methamphetamines and Opiates (heroin, morphine, etc.)
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