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Mayo Test Catalog, (Sorted By Test Name) - Mayo Medical ...

Mayo Test Catalog, (Sorted By Test Name) - Mayo Medical ...

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RHNI<br />

82856<br />

of polystyrene latex particles which have been coated with human IgG as well as radioimmunassay and<br />

enzyme immunoassays. Over 75% of patients with rheumatoid arthritis (RA) have an IgM antibody to<br />

IgG immunoglobulin. This autoantibody (RF) is diagnostically useful although it may not be<br />

etiologically related to RA. The titer of RF correlates poorly with disease activity, but those patients<br />

with high titers tend to have more severe disease and thus a poorer prognosis than do sero-negative<br />

patients. <strong>Test</strong>s are usually positive for patients with nodules or clinical evidence of vasculitis.<br />

Useful For: Diagnosis and prognosis of rheumatoid arthritis<br />

Interpretation: Positive results are consistent with rheumatoid arthritis.<br />

Reference Values:<br />

or =100 Strongly positive Reference values<br />

apply to all ages.<br />

Current as of January 3, 2013 2:22 pm CST 800-533-1710 or 507-266-5700 or <strong>Mayo</strong><strong>Medical</strong>Laboratories.com Page 1548

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