I have smoked small amounts of marijuana about 4 times in the past 3 months.. can I pass a hair test?

What happens when you FAIL ?

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. I would say you should be able to pass a basic hair drug test if you ONLY smoked 4 times in the last 3 months. The basic hair test has higher cutoff levels which means you can do a small amount of drug and it won't show up.