First Contact HR staff answers common questions we get on background checks, drug testing and other HR industry practices. Got a question? Ask us at info@FirstContactHR.com

Question #6: How long do drugs stay in an individual’s system?

Drugs do not typically remain in the body for very long. Often no more than 24 – 72 hours, depending on the frequency of use and the individual’s body functions. Marijuana is the exception, staying sometimes from several days to several weeks, again depending on the circumstances. However, through hair analysis, drugs are detectable up to 90 days after drug use.

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