Or just use the old one? It is not unknown for samples to get switched!
You know all those thread "I smoked but used ____ and I passed"? Sometimes the labels get switched and someone "dirty" passes, and another poor schmuck (you) is in trouble. This was DNA in a police lab, but it happens with urine samples, too.
DNA error
And in hospitals, too......
Lab errors prompt scrutiny at top medical facilities - Pittsburgh Tribune-Review
I'd make a post to birdgirl, to get her input. She's a med student and her hubby is a doctor. They know way more about medicine than most of us. Hopefully they can tell you if some condition could be responsible for the false reading.
About all I can say is keep protesting your innocence, show them the articles, and offer to do another test! Good luck!
Granny
