I agree with you completely one this particular lab. I've thought from the very beginning that they were suspect and maneuvering to protect all things French.
One thing that perplexes me is the fact that both the "A" and "B" samples are taken at the same time (as I understand the procedure and I might be incorrect). If so, then how in the world would it make any difference at all which lab analyzes the "B" sample since both will contain the same urine?
BEcause they only test the B sample if the A sample comes back positive. THey have someone different test it so that both fails are INDEPENDENTLY verified. It would be too tempting for the first testers to "Make Sure" that the B fails to corroborate thier A test.