Told my gp’s nurse with a jokey smile
“I’m never capable of providing a (urine) sample when asked as I enjoy giving the jar to the receptionist a little too much”
She leaned in & whispers
“Why do you think I write please dip test before sending away for analysis on every sample jar”
Ok, ok, she was probably joking & there probably is a valid medical reason for testing them twice but it really made me laugh at the time 