‘Normal’ span for cardiac troponin I (TnI) has changed with besides touchy tests, on the contrary the validity of low-level elevations is contentious. We aimed to epitomize the characteristics and outcome of patients with an initial TnI aligned 1–5 times the upper contour of normal.

Retrospective glance at of patients assessed for ACS with initial TnI exact between 0.05–0.19 ng/ml. Material collected included demographics, clinical data, TnI levels and outcome. Valuable outcome was the proportion of patients who had a serial TnI rise consistent with ACS.

72 patients were studied; median interval 71, median TIMI score 3, 66.7% male. 35 patients (48.6%) had a TnI rise consistent with ACS.

Approximately half of patients with initial TnI between 0.05–0.19ng/ml had a TnI rise consistent with ACS. An initial TnI in this radius is not, of itself, indicative of ACS. Clinical decision-making should be guided by clinical features and serial TnI measurement.