User talk:Summerchick9593

can someone please tell me why 37.5 milligrams of phentermine doesn't show up positive on a urine drug screen, even if used the same day? The drug test, tests for amphetamines and methamphetamines. I looked up the chemical structure on the pages provided and can't seem to figure it out. this is an incredible web site

--Summerchick9593 00:25, 15 April 2006 (UTC)