Has anyone been sero negative for any autoimmune disease? I saw rheumy today and from the last time when I saw him and his previous diagnosis of possible undifferentiated connective tissue disease he just kept saying that my latest blood tests had negative ana and negative other things. He did however agree to another stetoid injection and to put me back on hydroxy to see if it helps. He didn't mention sero negative like that's a possibility or even a thing. Is it really a thing, I mean a thing a rheumy would consider or is it a internet urban myth that the drs really don't take seriously.
Has anyone been sero negative and with treatment got positive bloods as I've read something before about someone not getting positive results until after they started treatment.
Thanks in advance