Hi Dr. Bill,

I've read a lot on this website and would like your opinion. Here is the deal - I had 2-3 hits of some decent stuff late in October, 2013, and will probably have a hair drug test the week of January 20, 2014. I'm 5'3", 190 lbs. female, Caucasian and had my hair colored late in November, 2013. I really doubt anything will show up but have that nagging worry. What do you think?

Thank you

Dr. Bill is no longer answering questions on this, or any, site any longer.

With that said, only 2 to 3 hits should not cause a positive result.

A hair drug test is meant to show consistent use over time. A 1.5 inch sample, cut at the scalp line, will go back 90 days. With the small amount of marijuana you smoked I am 90% sure your results will come back negative, even for the low limits of detection (LOD) hair drug test.