Levels of H-FABP in STEMI by time of admission Test Study group H-FABP (ng / ml) p X ± SD Median IQR ≤ 3 h 55, 04 ± 44, 67 48, 18 15, 40 - 79, 55 < 0, 05 * > 3 - 6 h 70, 44 ± 42, 77 72, 61 39, 22 - 100, 45 > 6 - 12 h 74, 47 ± 51, 49 78, 41 23, 71 - 120, 23 > 12 - 24 h 64, 27 ± 51, 58 56, 90 15, 65 - 99, 46 > 24 - 36 h 36, 15 ± 31, 42 38, 29 5, 67 - 64, 21 * Kruskal Wallis. test 3.1.4.