has essential measure measures Ethnic Group Race Blood Test Current Age Lactate Dehydrogenase Level Lactate Dehydrogenase Test Lactate Dehydrogenase Level Test Lactic Acid Dehydrogenase Test phenX:811001 Suggest update to label Suggest update to label in PhenX (from "Lactate Dehydrogenase Level"). LDH Test A bioassay to measure levels of lactate dehydrogenase, an enzyme released during tissue damage and injury.