[The results of application of the rapid quantitative assay for fatty acid-binding protein at the onset of acute coronary syndrome].

Fatty acid-binding protein (FABP) appearing in blood within a few hours of acute coronary syndrome (ACS) is a marker of myocardial necrosis. We estimated the diagnostic value of rapid immunochromatographic test for FABP in patients with ACS and compared it with other cardiomarkers: troponin 1 (Tn1), myoglobin and creatin phosphokinase-MB (CPK-MB). The study included 100 patients aged 61.3 +/- 12.9 yr hospitalized with ACS within 2 hr after beginning of anginous pain. FABP was detected by CardioFABP test, Tn1, myoglobin and CPK-MB by quantitative assays. Blood samples were taken 2, 6, and 24 hr after the onset of anginous pain. Acute myocardial infarction was diagnosed in 79 patients, unstable angina in 9, FC 3-4 angina of effort in 4, vasospastic angina in 1, non-coronary pathology in 7. Sensitivity of FABP, Tn1, myoglobin and CPK-MB 2 hr after onset of pain was 84.8; 34.2, 65.8; 22.8% respectively: it was 98.7: 92.4; 96.2; 82.3% in 6 hr and 56; 100; n/d; 86.7% in 24 hr. Specificity of FABP was 100% in all time intervals. It is concluded that FABP level determined by rapid qualitative assay within 2-6 hr after onset of ACS is a more sensitive cardiomarker than Tn1, myoglobin and CPK-MB for diagnostics of ACS.