Using a friend's urine to pass a drug test

[dark12]

Hey everyone,
SWIM uses marijuana, vicodin, and xanax pretty often and he was just informed that he needs to take a drug test in the near future. The test will be 10 panel.
Anyway, SWIM's friend is pretty much completely clean and he is willing to let SWIM use his piss.
Should SWIM have him pee in a bag then tape it between his legs on the way to the testing facility? What temperature does the urine need to be for it to pass first inspection? Is there anything SWIM should watch out for while he is doing this?
Thanks in advance!

dark12 added 8 Minutes and 34 Seconds later...

EDIT: SWIM is very concerned with the temperature of the urine. Would be a bad idea to tape one of those hand warmer pouches to the bag too?

dark12 added 36 Minutes and 15 Seconds later...

Ugh sorry for the triple post, but if SWIM goes and buys an at home testing kit from the store will that be as accurate as the average 10 panel test?
Like if I pass that test would it be safe to say that I will pass the lab test? for THC