So there is quite good agreement between people who get a supplemental negative on the IgG test and people who get a negative western blot, when they do both tests. I think you should feel encouraged about the negative supplemental test. I do have concerns when the supplemental is positive but even then there is poor agreement between people who get a positive supplemental. I now have 96 people who have positive supplemental tests from LabCorp and negative western blots. So I don’t trust a positive supplemental. But that’s not you. We can always do a western blot if you wish you or you can work with your own provider to get that but for now, I feel optimistic about your negative supplemental test.
Terri