Hair follicle drug test legal issues
- how sensitive is hair follicle drug testing
- how sensitive is a hair follicle drug test
- how far can hair drug test detect
- how long does a hair follicle drug test detect
Can a hair follicle test go back 12 months...
What to know about hair follicle drug tests
Hair follicle tests can provide a much larger window of detection than urine tests.
According to a , urine tests have a detection window of up to 10 hours to about 1 week for most drugs except marijuana, which can remain present in a person’s urine for up to 30 days.
Hair follicle tests can detect drug use for up to 3 months before testing, using hair samples that come from a person’s scalp.
Urine tests can detect more recent drug use, while hair follicle tests can identify regular, long-term drug use.
It is also easier for a person to tamper with a urine sample than with a hair sample, which may give hair follicle tests an advantage over urine tests when a person takes the test in a laboratory setting.
Although most drug screening still involves testing urine samples, hair follicle tests can help identify individuals who participate in regular, long-term drug use.
Some corporate, legal, medical, and educational institutions have turned to hair follicle drug tests as a complementary approach to traditional urine-bas
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