There is a blood test that could be done in place of an in office screen, but as I said, typically, when there is an office screen, that urine is also sent out for confirmatory testing, which looks for all of the
metabolites of the
opiate as it is broken down in the body
to measure compliance. There is very, very little false negatives or false positives in gc/ms or immunoassay testing.
I am sorry you are going through this.