Drank last drink around midnight Saturday and took a ua today at 10am. Is it possible to have passed my EtG test for alcohol?

How much did you drink? And what?

You could easily fail one in that time frame.

While you may pass, tests are not always 100 percent, it is more likely you will fail depending on how much was drank, and how much you drink on regular basis. The test is more commonly called the 80 hour test, because it often takes 80 hours to be safe to pass.