Hair Follicle Drug Testing: Window Period for Marijuana

Patient: Can you pass a hair follicle test for THC if you have have spoked in the last two weeks? Not a regular smoker.

Doctor: If what you meant by “passing” the hair follicle test is a negative result, then, in your case, I doubt it. THC can stay stay in your hair for ~3mos. Although results may vary depending on how fast your hair grows, most kits are standardized. I do hope this helps. Take care always.