On Saturday at 7-8 p.m. I drank two beers. It is now Monday at 5 p.m. I have to take an ETG test which can detect up to 80 hours supposedly. Will I pass this test? Please help!

Please help? What can we possibly do to help you?
You have a chance at passing but nobody is going to be able to say for sure how you will do. There are too many variables in this whole thing to be sure. So, you did what you did and you have to take the test no matter what any of us here do to "help" you. If you pass this one, I suggest learning from this and not taking chances anymore.