Congrads to you on a successful sub and welcome to the Sub Club.
I got clean urine from my preschool-aged son two days ago and kept it in the fridge. No problems there, but not one of my proudest moments as a momma.
Perhaps you should look at it from the bright side: Part of loving your child is being able to secure that job so he can have adequate food on the table, clothes on his back, and a roof over his head.