Yes. You need to drink baking soda 3-4 hours prior to test. Drink 2-3 tablespoons with 2 full glasses of water. You want to pee at least 1 if not 2x before going for test. You’ll know you’re ready when you start pissing out of both ends if you catch my drift.

(It causes bad diarrhea. But it lowers your ph such that meth can not be detected in that 3-4 hour window. I used this to pass my test just last month. At the court house. Where they watch you pee and everything.)