Hi, I have a hair drug test in a couple days. I took 1mg of xanax 2 or 2.5 months back. Would that show up on the results? It was my only time taking xanax ever.

Drugs stay in your hair, and that includes body hair, until the hair grows out.

I heard that it depends on how much you do and for how long, since not all of the drug goes through to the hair

I choose to believe what I read on medical sites, not what you heard.