I'm taking a hair drug test next week and the last time I smoked pot was between Dec 15-20 of last year. Not sure if you would say I was a heavy user, but I probably smoked 4-5 times a week for up to 1-2 weeks a month for the 6 months. This was some pretty strong stuff as well. Do you think there's any chance I could pass?

Very, very slim. That's not light use... light use might be only on a Saturday night.

It's possible you could pass but it's not likely.

It's possible, but chances are slim. While this is not to be considered heavy use, it is not light use by any means.

What do you stand to lose if you fail?

You might pass it but chances are 0.5% , I'm sorry.

Yes, somehow we know your chances of passing are half a percent....

sirchipx, I'm curious to know how you came up with that percentage.

A hair drug test is meant to show consistent use over time. A 1.5 inch sample of hair, cut at the scalp line, will go back 90 days. Based on your usage over the last 3 month I would say you might have trouble passing a hair drug test. If it is a hair test from an employer you might have better chance of passing because most employers use a test that has higher cutoff levels which means you could do a small amount of drug and still be negative but I think even that test will detect your usage. Hope that makes sense.

I have no doubt they will detect some level of usage but where they put that pass threshold is unknown. Have you been tested before? Why are you being tested now? Pass or fail depends on the reason you are being tested.