False-Positive Troponin I Attributed to a Macrocomplex

False-negative immunoassay results for cardiac troponin I probably due to circulating troponin I autoantibodies.

A false positive case of cardiac troponin I: which diagnostic approach?

False-positive troponin I in a young healthy woman with chest pain.

Case Report A 43-year-old healthy woman came to the emergency department complaining of a dull ache in her left chest, which radiated to her left shoulder. The pain was minimal but constant and unaffected by exertion or rest. She had no associated diaphoresis, nausea, or vomiting. The patient did not smoke and did not have hypertension, diabetes, or a family history of cardiac disease. Her low-...

Electrocardiographic Changes and False-Positive Troponin I in a Patient with Acute Cholecystitis

Cardiac troponins are the most sensitive and specific serum markers of myocardial cell injury, but they can also arise without apparent cardiac injury. Besides, acute cholecystitis may be associated with nonspecific ST-T wave changes in electrocardiography (ECG). The signs and symptoms of gallbladder and heart disease may overlap, which can make diagnosis difficult. We describe the case of a 75...

False Positive Troponin Levels due to Heterophil Antibodies in a Pregnant Woman

Positive troponin test results in peripheral blood can be detected either during myocardial injury or from falsely positive test results. In this report, we present the positive results of a troponin test in a 24-year-old pregnant woman referred to the emergency department with atypical chest pain, and the clinical algorithm that we used to make the correct diagnosis. This patient presented wit...