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A reference range is usually defined as the set of values 95 percent of the normal population falls within (that is, 95% prediction interval). [2] It is determined by collecting data from vast numbers of laboratory tests. [citation needed]
C-reactive protein (CRP) is an annular (ring-shaped) pentameric protein found in blood plasma, whose circulating concentrations rise in response to inflammation. It is an acute-phase protein of hepatic origin that increases following interleukin-6 secretion by macrophages and T cells .
Test Sensitivity and specificity Approximate peak Description Troponin test: The most sensitive and specific test for myocardial damage. Because it has increased specificity compared with CK-MB, troponin is composed of 3 proteins- Troponin C, Cardic troponin I, and Cardiac troponin T. Troponin I especially has a high affinity for myocardial injury.
A new approach to a routine blood test could predict a person’s 30-year risk of heart disease, research published Saturday in the New England Journal of Medicine found.
The trial analyzed 17,802 patients without evidence of heart disease but with high CRP levels. In 2008, results presented at the American Heart Association meeting and published in the New England Journal of Medicine (NEJM) found that patients with low-to-normal LDL cholesterol receiving rosuvastatin had a lower rate of major cardiovascular events.
The test can be used to aid in diagnosing myocardial infarction, as a prognostic marker in patients with acute coronary syndrome and to identify the risk (low, moderate and elevated) of future cardiovascular diseases such as myocardial infarction, heart failure, ischaemic stroke, coronary revascularisation, and cardiovascular death in ...
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A 2018 systematic review comparing PCT and C-reactive protein (CRP) found PCT to have a sensitivity of 80% and a specificity of 77% in identifying septic patients. In the study, PCT outperformed CRP in diagnostic accuracy of predicting sepsis. [56]