Yeah, the place I go does not test creatinine levels. I have heard other people say they were made to pee again cuz it was too clear the first time.

They dip a five panel "dipstick" in the urine that tests for thc, benzo's, opiates, methamphetamines and...I can't remember the fifth one...it's either barbiturates or hallucinogens. Plus a seperate single "dipstick" for oxycontin (apparently cuz it's synthetic it does not show as an opiate). They test it right in front of you and if all are negative they ask you to flush your specimen and throw out the container. If any are positive, for an extra $20, you have the option of sending it to the lab for a GC/MS confirmation.