Lactate dehydrogenase 287 is slightly higher than the normal value, it may be hemolysis of the test specimen, or myocardial infarction, malignant tumors, hepatitis and other serious diseases, it is recommended to consult a doctor for clarification in time. The normal range of lactate dehydrogenase is 109～245U/L. After hemolysis occurs in the blood test specimen, the red blood cells rupture, and the level of lactate dehydrogenase will increase, and it is necessary to take blood specimen again for testing. Lactate dehydrogenase is mainly found in myocardial tissue, skeletal muscle tissue, kidney tissue and liver tissue, etc. When the cells of these tissues are necrotic, lactate dehydrogenase can be released into the blood, and the lactate dehydrogenase level will be elevated. Therefore, in diseases such as myocardial infarction, malignant tumors, and hepatitis, the level of lactate dehydrogenase is also elevated when tissue cells are necrotic, so it is recommended to consult a doctor for clarification in order to avoid delaying the disease.