umm no it will probably be in your system.
if you really need to pass get one of those 5 hour energy shot bottles (theyre like 2 oz) and have someone with clean pee pee in it for you.. then you can like put it in your vagina and just take it out and pour it in the cup when youre in the bathroom, and just put it back in.. you really only have it in for like a total of 15 min and it doesnt hurt too bad.
just make sure that you keep the pee warm like hold it in your underwear or in your waistband elastic or something because theyll know if its cold.
this really works!
hope this helps hon, good luck!