So my buddy is trying to get a job, he is freaking out because he bought vyvance from another student at his university and took it for three days, last day being a week ago. He came to me cause he figured I could help him figure it out (I’m smarter than him but not really smart).

So here is the problem:

Apparently the test he is taking is 100mg/dL level which seems pretty high.

How fucked is he? Apparently it looks like all three doses were big. It looks like it usually takes 2-3 days for it to leave your system. But that looks like it is true for 500-1000mg/dL tests. So if we assume that with half life being 10-12 hours and he would be good after 2-3 days he should be at a little less than 500-1000mg/dL so after 24 hours (4th day) he should be at 125-250mg/dL, after 48 hours (5th day) it should be at 31.25-62.5mg/dL. So with the added 2 days of half life reduction in his system he should be in the clear? Am I doing that right?