I took 40mgs of adderall for two days straight. how long will this be in my urine? i get urine tested this friday.

About 4 days: The half-life is about 12 hours so 24 hours after stopping about 1/4 will still be in your body, in 2 days 1/16 will remain etc. so it depends on how sensitive the test is. Adderall is dangerous and addicting. I strongly advise not using it if it has not been prescribed. See http://prescription-drug.addictionblog.org/how-long-does-adderall-stay-in-your-system/