u/Every_Acanthisitta26

So I've been a heavy daily user of cannabis for a little over a year. I stopped smoking 4 days ago because I might be getting a urine test soon. I ordered 5 sets of those DrugExam THC Advantage multi-level strips from Walmart. Took the test this morning after waking up and tested negative for every single level (20, 50, 100, 200, and 300 ng/ml). I thought it was awfully suspicious so I took another one an hour or two later and got the exact same results. Negative at every level. Is this possible/are these tests accurate? I know for a fact I'm following the instructions correctly. For context I do have lots of features for a quick detoxification process. I'm a 20 year old male who is very active (5 hard workouts a week), I hydrate well, eat very healthy, and body fat % is probably anywhere from 11-13%. I just can't fathom how I could be a daily user for over a year and stop for 4 days and pass at every level. Should I get another test from a different store??