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. 2021 Jul 15;117(1):181–264. [Article in Portuguese] doi: 10.36660/abc.20210180
Biochemical markers - Summary of recommendations and evidence
Troponins are the biomarkers of choice for diagnosing patients with suspected AMI. I A
When highly sensitive troponin assays are available, no other marker should be requested for routine AMI diagnosis. I B
Biochemical biomarkers of myocardial necrosis should be measured in all patients with suspected NSTE-ACS. When highly sensitive troponin assays are available, serum levels should be measured on admission and, ideally, reassessed in 1 h or up to 2 h. If unavailable, conventional troponin measurement should be performed at admission and repeated at least once, 3 to 6 hours later, if the initial results are normal or slightly elevated. I B
CK-MB mass levels can be used if troponin assays are unavailable. IIb B
Myoglobin can be used to detect myocardial necrosis in patients with suspected NSTE-ACS. II