Several blood tests measure different proteins in the heart to assess heart health and diagnose conditions like heart attacks. The specific test depends on what the doctor is looking for.
Key Heart Protein Tests
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Troponin Blood Test: This test measures troponin, a protein released into the bloodstream when the heart muscle is damaged. Elevated troponin levels strongly indicate a heart attack. [Source: NHS inform, Mayo Clinic, Cleveland Clinic] It provides a quick and accurate measure of heart muscle damage. [Source: NHS inform, July 2, 2024]
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Lipoprotein (a) [Lp(a)] Blood Test: This test measures Lp(a), a lipoprotein particle linked to an increased risk of heart disease and stroke. High levels suggest a higher risk. [Source: MedlinePlus]
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C-reactive Protein (CRP) Test: This test measures CRP, a protein produced by the liver that increases during inflammation. Elevated CRP levels are associated with a heightened risk of heart disease and heart attacks. [Source: Mayo Clinic, WebMD, Johns Hopkins Medicine] Even if heart attacks are caused by inflammation, CRP testing isn't definitively useful unless it proves to reduce the risk. [Source: Harvard Health]
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Other Cardiac Biomarkers: Blood tests also measure other proteins and enzymes, such as apolipoprotein B (ApoB) and fibrinogen, to assess cardiovascular risk. [Source: Cleveland Clinic]
Interpreting Results
The interpretation of these tests requires medical expertise. Doctors consider the results alongside other factors, such as symptoms, medical history, and other test results, to make a diagnosis and determine the appropriate treatment.
