TNNT2 and coronary artery disorder: This cTnT release in coronary sinus blood was subsequently mirrowed in a delayed, small but significant hs-cTnT concentration increase in peripheral blood samples after 3 h (doubling to tripling of baseline values), even in the subgroups without significant coronary artery disease (CAD) or without net myocardial lactate production proving myocardial ischemia.