Physical examination transaminases, known as aminotransferases, are a group of enzymes that catalyze the aminotransfer reaction between amino acids and alpha-keto acids and can be used in the examination of liver function. Under normal conditions, serum levels of aminotransferases are low, and when the aminotransferase containing cells are damaged, aminotransferases enter the plasma. Therefore, by measuring the level of aminotransferases in the serum, it can assist in the diagnosis of disease. The physical examination mainly detects glutathione aminotransferase and glutamic oxalacetic aminotransferase.1. Glutathione aminotransferase: It is mainly distributed in the liver, followed by skeletal muscle, kidney, heart muscle and other tissues. Because it mainly exists in liver cells, it can best respond to diseases occurring in the liver. When a large amount of alanine aminotransferase is detected in the serum, it suggests the occurrence of acute viral hepatitis, chronic viral hepatitis, alcoholic liver disease, drug-related hepatitis, fatty liver, liver cancer, cirrhosis, etc.; 2. Glutathione aminotransferase: It is mainly distributed in the heart muscle, followed by in the liver, skeletal muscle and kidney tissues. Large amount into the blood suggests the occurrence of acute viral hepatitis, chronic viral hepatitis, alcoholic liver disease, drug-related hepatitis, fatty liver, liver cancer, liver cirrhosis, etc. Since glutamic aminotransferase is mainly distributed in the heart muscle, it can be used as an auxiliary diagnosis in the event of acute heart attack; clinically, the type and stage of the disease can be determined by comparing the high and low values of both. It can be seen that transaminase test has greater significance, and is especially important for liver disease examination. You should fast for 8 hours before the test, eat a light diet the day before, avoid high-fat and high-protein intake as much as possible, prohibit drinking alcohol, and keep normal rest and avoid staying up late and straining. Once the transaminases are found to be elevated, you should go to the hospital for further examination in time to clarify the cause of the elevated transaminases and carry out targeted treatment.