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.
Hello ReitaErin, You didn't mention if you're being tested, but Klonopin(Clonazepam) is a long acting drug, has a half life of approximately 34 hours, benzos typically test positive in the urine for about 3 days after ingestion unless you are on the drug on a regular basis.