There are more reasons for high lactate dehydrogenase because lactate dehydrogenase is a glycolytic enzyme that catalyzes the dehydrogenation of lactate to produce pyruvate. The first reason for this elevation is whether there is myotonic dystrophy, because lactate dehydrogenase is significantly elevated in the blood of patients with myotonic dystrophy. Second, is there liver disease, liver disease, liver cell damage, lactate dehydrogenase inside the liver cells will be released into the blood, then the lactate dehydrogenase index will be significantly higher. Chronic hepatitis and liver cancer can also lead to increased lactate dehydrogenase. Then there are lung diseases, such as pneumonia and lung abscess, which can also increase lactate dehydrogenase. Heart diseases such as viral myocarditis, rheumatic myocarditis, Creutzfeldt-Jakob disease, and acute myocardial infarction are associated with a significant increase in lactate dehydrogenase. Kidney diseases, such as tubular necrosis, glomerulonephritis, etc., also have a significant increase in lactate dehydrogenase.