The six biochemical tests are tests for human blood, which can detect and find some diseases and play a certain guiding significance for the diagnosis and treatment of diseases. The six biochemical tests include the following six items, including alanine aminotransferase, creatinine, urea nitrogen, serum glucose, triglycerides, and total cholesterol, as follows: 1) alanine aminotransferase, or aminotransferase, is an important indicator of impaired liver function, and the value directly represents the degree of liver damage; 2) creatinine and urea nitrogen are two important tests of kidney function. If the value is very high, it represents kidney failure and cannot be compensated, so dialysis is needed for treatment; 3. If both of them are elevated, they are collectively called hyperlipidemia, which is an important risk factor for coronary heart disease, of which elevated cholesterol is a greater risk for coronary heart disease than elevated triglycerides. Therefore all six tests represent different diseases and are of great significance in diagnosing the disease and treating it.