Are high-sensitivity cardiac troponin I values stable between preoperative visit and day of non-cardiac surgery?

•High-sensitivity cardiac troponin cTn (hscTn) can be measured before surgery and has shown prognostic significance.•It is, however, unclear if preoperative hscTn values are stable in the period before surgery.•Results from this small study suggest that hscTnI values are stable in the preoperative period.