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False positive elevation of cardiac troponin I in seropositive rheumatoid arthritis
G Katwa1, G Komatireddy, S E Walker
1Department of Internal Medicine, University of Missouri-Columbia, Harry S. Truman Memorial Veterans Hospital, 65212, USA.
The Journal of Rheumatology
|January 5, 2002
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.