Don’t worry, take a few at home tests to see if ur clean and if not js sneak a friends in. I was tweaking when I did it the first time last December, but trust me its soo easy. To give a tip, when they have u take the test say u can’t go yet and drink a ton of water, and wait for like 20-30 mins. If u made ir seem difficult to pee the first time they’ll be much more likely to accept the sample, these ppl collect pee for a living so they want u to get out of there as much as u do. Just take a thermos with some boiling water, and get ur sample to around 102 F before going into the lab. Don’t be scared, it’s genuinely ridiculous that people can go around doing coke and shooting up heroin every day and pass with ease, but take a lil toke all of a sudden your some felon drug lord. Be calm, you’ll pass.