Blood Drug Testing

How long will a urine specimen keep for lab testing?If it is a week old is it no good to test for blood in it?

Public Comments

1. A week old? It's no good. Contact your doctor's office. If you think you have blood in your urine you need to be seen by the doctor first.
2. If it was refridgerated at the time it was obtained then it might be able to give you some results. If not then its already decomposed and its useless.
3. no good. most labs don't even keep urine specimens that long. we keep ours 48 hours and then toss em... especially for blood, the actual red blood cells degenerate pretty fast