How do you beat drug testing?

If you're trying to beat an ETG alcohol test...don't, there is no way around it. And if you're on Collin County probation, just don't drink An ETG alcohol test detects the enzymes that your liver makes when drinking alcohol up to 80 hours after your last drink. So, my advise to you would be to just stay sober until you don't have to worry about getting tested anymore.