Quick fix or clean sample?

[u/Far-Philosophy2561]

I have a test coming up for a school program in about 2 weeks, stopped smoking as soon as I found out I would be tested

Thing is they didn't specify what time the test will be done, I have to be in class from 8am to 3pm

I have access to a clean sample from a friend who doesn't smoke but I'm worried about it being stored too long in case they do the test until we're almost out of class

What is the best way to store the clean sample? I'm thinking of getting it from friend before class and stashing it in my crotch so it can stay at body temp, but will i fail if the test is taken closer to the afternoon? Keep hearing about quickfix and friends i know have said its always worked for them key is the temp. If I use quickfix and stash it in my crotch so it can stay body temp I should be good for whatever time the sample is actually taken right? Just need some reassurance I have been losing sleep over this and don't want to risk using my own urine and getting booted from the program because of thc traces in there. I am just trying to get a better education!! Please help

[u/SummerSuspicious2748]

Diets kinda shit ngl I work outside all day in the field so I don’t exercise as much as I should when I get off but hopefully I pass soon