Biochemical examination includes many items, including liver function, kidney function, blood lipids, blood sugar and so on. First, liver function. Mainly total protein, albumin, globulin, total bilirubin, direct bilirubin and indirect bilirubin, as well as ghrelin and glutamic oxalacetic aminotransferase. Secondly, renal function, mainly including urea nitrogen, creatinine, uric acid measurement. Third, blood lipids, including the determination of serum total cholesterol, triglycerides, and serum high-density lipoprotein, low-density lipoprotein, and serum apolipoprotein A1, or serum apolipoprotein B, serum apolipoprotein A measurement. Fourth, the determination of blood glucose, blood glucose is fasting blood glucose. Fifth, the determination of electrolytes, electrolytes including potassium, sodium, chloride, calcium measurement.