I Drank Four Beers Last Night. How Long Does It Stay In System? And If I Blow In A Test Will It Com Up?

Alcohol can be tested in blood up to 12 hours after drinking. It can be tested positive in urine for 3-5 days via ethyl gluconoride metabolite and 10-12 hours through routine method test. In hair follicles it can be tested positive until life of the hairs. For more details, visit drug test.

As far as I remember it, a can of beer remains in your body for 48 hours. Now 4 beers should remain for at least 7 to 8 days. You need to drink a lot of water and juices for its early removal.