The utility of presentation and 4-hour high sensitivity troponin I to rule-out acute myocardial infarction in the emergency department

Hs-cTnI > 99th percentile thresholds measured on presentation and at 4-hours was not a safe strategy to rule-out AMI in this clinical setting irrespective of whether sex-specific 99th percentiles were used, or whether hs-cTnI was combined with ECG results.