TNNT2 and injury: Patients with myocardial injury are not infrequently discharged directly from the ED if their hs-cTnT concentrations are similar to those measured during previous visits, if all other clinical assessments suggest low cardivascular risk, and particularly if the high hs-cTnT concentrations are considered to be related to other factors, such as a high age or a low estimated glomerular filtration rate (eGFR).17 However, it is unknown whether this practice is safe.