Glutathione reductase is mainly used to detect liver disease, biliary tract disease and so on. Glutathione reductase is the main flavoprotein enzyme that maintains the content of reduced glutathione in the cells and participates in the redox reaction of the body. It is found in organs such as liver and kidney, and the normal value is 33~73 U/L. 1. Liver disease: glutathione reductase is most abundant in the liver, so when acute hepatitis, toxic hepatitis, liver cancer and other diseases occur, glutathione reductase will be obviously elevated. In the early stage of liver cancer, glutathione reductase will be elevated to different degrees, and in the late stage, glutathione reductase tends to be normal. 2. Biliary tract diseases: such as biliary tract infections, gallbladder stones, cholecystitis, etc., because bile cannot be discharged, a large amount of bile will be deposited in the gallbladder or the liver, which will affect the liver function and lead to the elevation of glutathione reductase. When patients are detected with abnormal glutathione reductase, they should go to the hospital for medical consultation to clarify the cause of the abnormal glutathione reductase and to carry out targeted treatment.