tboler
Oct 26, 2011, 02:12 PM
I took two puffs off a joint 3 months ago. I was wondering, would I test positive with a hair sample? Other than 3 months ago, I have not smoked in over 5 yrs. Please help
DrBill100
Oct 26, 2011, 02:32 PM
You should not test positive for cannabis under the circumstances you explain.
Research provides that hair is a very poor matrix for detecting cannabis use. THC/COOH simply does not incorporate into hair as other drugs do. (see Auwater, 2010 (http://www.fsijournal.org/article/S0379-0738(09)00524-6/abstract) or Musshoff & Madea, 2006 (http://norml.org/pdf_files/Review_biologic_matrices_indicators_cannabis_use.p df))