I have a hair test for a new job in 2 days and was wondering if I took 2 adderall in February, 6 months ago, will it show up on the test? Also 2 weeks ago I took 2 hydrocodone but I am prescribed to them. My head is shaved and the only hair long enough would be my arm pit hair. Should I be concerned?

No, you shouldn't be.

Blood/urine tests are meant to test recent use, within the last 2-5 days give or take, while hair test is meant to show habitual use over several months. The usual time frame is about 3 months or 90 days. The hair is ground up and then processed to calculate the amount of particular drug residues are in the hair. So if you smoke a joint once a month it probably won't be above the cut off. If you hit the bong every night during the late show, than you probably aren't getting a lot of sleep. As well you will fail the test.

In your case there probably wouldn't be enough residue to fail any hair tests. You're probably in the clear.

Sometimes shaving your head because you are getting ready to take a hair drug test can backfire. Head hair will go back 30 days for every half inch of hair but body hair has different growing cycle so the drug history can be anywhere from 9 months to 12 months, regardless of length. For the most part you should be able to pass the hair drug test.