May aid in prognostication for rheumatoid arthritis. Rheumatoid Arthritis Panel (2003277
) is preferred for the workup of suspected rheumatoid arthritis or undifferentiated inflammatory arthritides.
Semi-Quantitative Enzyme-Linked Immunosorbent Assay/Quantitative Enzyme-Linked Immunosorbent Assay.
This test is New York DOH approved.
The presence of all three rheumatoid factor (RF) isotypes at abnormal levels has high specificity for a diagnosis of rheumatoid arthritis (RA). However, the presence of RF isotypes in any combination may be found in a variety of conditions, including Sjogren syndrome and hepatitis infections.