My primary doctor did the ANA and automatically diagnosed me with lupus because he had no clue what the antiRNP meant. The rheumatologist said he’d never had a patient with MCTD and admitted I’d have a hard time finding one that is knowledgeable about it. You’ve gotta do a lot of research yourself unfortunately.

I’m looking for more information about this.. my first results came from my primary care doctor.. the ANA was positive and I was positive for RNP antibodies.. I was referred to rheumatologist and he redid the ana but not the RNP .. my ana was negative that time.. which was a year later! And I still have RNP antibodies now..