Alcohol only stays in your blood for up to six hours, but certain drug tests can detect alcohol as far as three months after ...

Xanax will kick in after about 15 minutes but can be detected in your urine for anywhere from 2-4 days after ingestion.

The amount of time marijuana stays in your system can range from one to 90 days, depending on the test you take to measure it. For example, a urine test for marijuana may test positive for up to 30 ...