PT - JOURNAL ARTICLE AU - G Katwa AU - G Komatireddy AU - S E Walker TI - False positive elevation of cardiac troponin I in seropositive rheumatoid arthritis. DP - 2001 Dec 01 TA - The Journal of Rheumatology PG - 2750--2751 VI - 28 IP - 12 4099 - http://www.jrheum.org/content/28/12/2750.short 4100 - http://www.jrheum.org/content/28/12/2750.full SO - J Rheumatol2001 Dec 01; 28 AB - 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.