So here it goes:SWIM took 1 - 40mg Vyvanse Saturday night (around 10 p.m.?), effects didn't wear off until approximately 6 or 7 Sunday morning. It is now Tuesday at 4:00. SWIM took a drug test at about 9:00 a.m. this morning. SWIM's weight is about 145, and is about 5'9'' or so. How likely is it that SWIM's drug test will be positive for amphetamines?