What does negative ANA and positive RNP mean?
What does negative ANA and positive RNP mean? A negative antinuclear ribonucleoprotein (anti-RNP) antibody result is defined as less than 20 U based on enzyme-linked immunoassay (ELISA). A borderline result is defined as 20-25 U. A positive result is defined as more than 26 U. Can you still have an autoimmune disease with negative ANA? […]