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Case Reports
. 2022 Jun 22;14(6):e26193.
doi: 10.7759/cureus.26193. eCollection 2022 Jun.

A Case of Elevated Troponin I Level After Packed Red Blood Cell Transfusion With Normal Coronary Angiography

Sherif Roman  1 , Manpreet Sran  2 , Amgad N Makaryus  3   4
Affiliations
Case Reports

A Case of Elevated Troponin I Level After Packed Red Blood Cell Transfusion With Normal Coronary Angiography

Sherif Roman et al. Cureus. .

Abstract

Other than acute coronary syndrome (ACS), many clinical conditions are associated with increased cardiac troponin I (cTnI) levels. Conditions such as pulmonary embolism, acute heart failure, myocarditis, sepsis, and renal failure are commonly reported as underlying causes. Analytical interference with the cTnI assay can also lead to falsely elevated troponin I levels. That can happen due to multiple causes such as fibrin clots, heterophile antibodies, microparticles contained in the sample, rheumatoid factor, interference by bilirubin, hemolysis, and elevated alkaline phosphatase activity. Herein, we present the case of a 66-year-old female who presented with pleuritic chest pain and had a cTnI of 35.5 ng/mL post-transfusion of three units of packed red blood cells. The patient had a complete ischemic workup for ACS, including coronary angiography, which was negative for coronary artery disease.

Keywords: acute coronary syndrome; chemiluminescent immunoassay; fluorometric immunoassay; laboratory testing; microparticle enzyme immunoassay; troponin.

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Conflict of interest statement

The authors have declared that no competing interests exist.

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