how long does alcohol stay in your blood system
The following offers an estimated range of how long alcohol stays in your blood, urine and saliva: 1  Saliva test: One to five days. 2  Blood test: 12 hours. 3  Urine test: Three to five days via Ethyl Gluconoride (EGT) metabolite.  Breathalyzer test: Up to 24 hours.