Hi Debbie,
Firstly, are you sure the wee in the toilet was his, not one of his kids? If it was his then that’s likely to be the accurate one, I’ve known people cheat the tests quite easily.
Unless you saw him actually wee in a pot (even saw the wee coming out – gross) and hand that pot to you to test then I wouldn’t believe it!
Believe me, they’ll do anything to cover their asses x