For liver function tests in normal people, it is recommended that patients have their blood drawn in the morning on an empty stomach without food or water for more accurate results. The normal values of liver function for glutathione and glutathione are 0-40 U/L, and the normal values of the ratio of glutathione to glutathione are mostly in the range of 1.5-2.5. The normal values of total protein in patients are 60-80 g/L, albumin 35-55 g/L and globulin 20-30 g/L. The ratio of albumin to globulin is in the range of 1.5-2.5. The normal values of total bilirubin in patients are 1.7-17.1 μmol/L, direct bilirubin 0.1-6.2 μmol/L and indirect bilirubin 1.7-10 μmol/L. The normal values of alkaline phosphatase in patients are 20-110 U/L and GGT 11-50 U/L. Within this range, it is mostly considered The patient’s liver function is normal. If it exceeds the upper limit of normal, the patient is mostly considered to have liver function damage.