Lactate dehydrogenase 307 needs to be normalized according to age, if the value is high in adults, if it is under 14 years old the value is normal. The normal range of lactate dehydrogenase in adults is 120-250 u/l, in newborns lactate dehydrogenase can be up to twice as high as in adults, and by the age of 14 years it is the same as the adult value. High values of lactate dehydrogenase can be due to non-disease factors, such as newborn results that can be twice as high as those of adults, after strenuous exercise, during pregnancy, collection of samples for hemolysis, and use of certain medications, as well as to disease factors such as damage to visceral cells, rupture of red blood cells, and abnormal proliferation of blood cells. Lactate dehydrogenase 307 is recommended to go to the regular hospital in a timely manner, combined with other relevant examinations and the patient’s symptoms and signs of age, diagnosed by a professional doctor to see whether the need to regulate the treatment, do not use private medication to avoid causing adverse effects.