Possible: You should ask your rheumatologist. ANA and anti-RNP are seeing in mixed connective tissue disease and can overlap with rheumatoid arthritis but more information is needed, talk to your rheumatologist about them. RA by itself usually have other 2 antibodies positive called RF ( rheumatoid factor) and anti-CCP ( citrullinated peptides).
Answered 12/16/2014
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