I might just be paranoid, but I do random ua's and have heard that the ETG drug tests are super sensitive. I got a flu shot and then that night received the request for a ETG 10 panel ua.

EtG is short for ethylglucuronide a metabolite of alcohol (ethanol). An EtG test is used only to detect recent alcohol consumption. The test is highly specific and detects only ethylglucuronide and nothing other than alcohol creates EtG.