Can anyone tell me which test is more accurate:a scalp hair test or a body hair test?
Can anyone tell me which test is more accurate: a scalp hair test or a body hair test. We have 2 test that were taken on the SAME day & 1 shows positive for methamphetamine and 1 shows negative. It should show negative! We are at a loss as to how a test that is so accurate has 2 different results. Is there any way that "exposed" hair like scalp hair can be contaminated where "covered" hair like body hair wouldn't be. I do not doubt that where this person works, they could have been exposed to all sorts of things, but I find it hard believe if it was ingested that it wouldn't show up on a body hair test.
Thank you