By the way--I know all insurances are different, but it turns out mine will pay at in-network levels for out-of-network labs when no in-network lab does the test. The lab didn't know that, and if I hadn't thought to ask if there was "gap coverage," I wouldn't have known either. It's something to look into for other seronegatives who are being tested for the LRP4 antibody.

Abby