False positive elevation of cardiac troponin I in seropositive rheumatoid arthritis.

Katwa, G; Komatireddy, G; Walker, S E · J Rheumatol · 2001

case_report · Level V

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Abstract

Cardiac troponin I is a sensitive and specific biochemical marker for the diagnosis of acute myocardial injury. We describe a patient with seropositive rheumatoid arthritis (RA) in whom troponin I, measured with a microparticle enzyme immunoassay, was elevated falsely in the absence of acute myocardial infarction. Apparent elevation of troponin I concentration should be evaluated with care in patients with seropositive RA.

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