Had A drink this afternoon, how long will it take before I pass a urine drug screen and anything I can do to quicken it?

Nothing you can do will change anything, its never going to be gone any faster than YOUR body can metabolize it... but then even after its gone... there are detectible chemical metabolites that will cause a test failure for a while after the alcohol is gone. If you were worried about failing a test... you shouldn't have drank any. Look into AA or one of the other programs that will help you stay clean and sober.

How often do you drink, and why are you being tested? Why is that important? Because habitual binge drinkers take longer to metabolize the alcohol enough to pass a test while one drink every now and then may not even show up a day later, and to add the terms and cut off levels are different for employers and probationers which may have a zero tolerance. Not to mention many other factor, and dilution, which is trying to cover up the deed, or simply the absence of normal human biological markers, which may result in automatic failures.

So where are you in the great food chain?