What percent blood alcohol level is normal after a few drinks?

Depends. Your metabolism, length of time between and since last drink, if you consume food at the same time, and the type of drink may all affect blood alcohol level. 1 beer=a 6 oz glass of wine=1shot. Many mixed drinks have more than 1 shot. On average 2-3 shots or equivalent within 2-3hrs would put you over the legal limit to drive.