I had a hair follicle test one week after having one hit of marijuana. Will test show positive?
- 24 Sep 2010 by dmvdiva
- 14 October 2010
I'm sorry to say so but yes it will. Marijuana and many other drugs can be detected as far back as one year. Standard test only checks for a 90 day period. Which is one reason you might see that many druggies have a completely shaven head.
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