High glutamyl transpeptidase does not cause low protein, and the two are not necessarily related, but high glutamyl transpeptidase and low protein can be present in liver injury. High glutamyl transpeptidase may be due to physiological reasons such as staying up late, drinking alcohol, or after strenuous exercise, or it may be due to biliary obstructive disease, various liver diseases, and other diseases such as pancreatitis, pancreatic tumors, and prostate tumors. Low protein may be caused by malnutrition, low synthesis due to liver diseases such as cirrhosis, hepatitis, hepatocellular carcinoma, etc., or protein loss due to renal diseases such as nephrotic syndrome, etc., etc. Various liver diseases such as cirrhosis, fatty liver, alcoholic hepatitis, and hepatocellular carcinoma can be accompanied by high glutamyl transpeptidase and low protein, but it is not low protein due to high glutamyl transpeptidase. People with high glutamyl transpeptidase and low protein should go to the hospital for examination and treatment under the supervision of a doctor.