α-Hydroxybutyrate Dehydrogenase(α-HBDH) Determination Reagent is an in vitro diagnostic quantitative test kit. α-Hydroxybutyrate dehydrogenase (α-HBDH) occurs in higher levels in heart muscle tissue and therefore is more sensitive and specific in diagnosis of myocardial infarction. It is used to diagnose recent heart trauma, such as a heart attack.