The T-Score Formula. The t-score is a fraction. The numerator is the sample's mean minus mean of the group you are comparing the sample to, and the denominator is the sample's standard deviation divided by the square root of the sample size.
If you have smoked marijuana then the drug will stay for 3 to 30 days. This is normal for the common drugs. But in the case of marijuana, this can be detected even after a month in Urine drug test marijuana. Marijuana will stay in your system for 10 days if you have been smoking occasionally.
It is my understanding that amphetamines (Adderall is technically a mix of amphetamine salts) stay in your system for just 3 days, and are detectable by urine tests during that time.On the bright side, this is much less than the 30 days that marijuana is detectable.anax is water soluble, and if you drink adequate fluids, can be out of your system in as little as 1-2 days. 3-5 tops, depending on how often and how much you take. 6 people found this useful. Edit.