Drug Testing

Hair testing is a process in which hair specimens are analyzed for the use of illicit drugs and is the most accurate and effective method of finding users of drugs of abuse. 

Using a small sample of hair cut at the scalp, hair analysis evaluates the amount of drug metabolites embedded inside the hair shaft.

Hair testing is a process in which hair specimens are analyzed for the use of illicit drugs and is the most accurate and effective method of finding users of drugs of abuse. 

Using a small sample of hair cut at the scalp, hair analysis evaluates the amount of drug metabolites embedded inside the hair shaft.

When compared to other forms of testing, hair samples can detect a much longer period of drug use. A donor’s 1.5 inches of head hair can provide for approximately 90 days of drug history use. In comparison, urinalysis can only detect most drugs within 2-3 days of use. After this period, a donor will be free of the drug, test negative and slip through the screening process. 

Therefore, hair testing is important in pre-employment screening where most candidates are aware that a drug test might be required and can otherwise abstain accordingly.