Protein is synthesized by the liver, so albumin, globulin, is mainly an important indicator of liver function. If there is a problem with albumin and globulin, it means that the liver has been damaged. The normal range of albumin is 40-50 g/L and globulin is 20-30 g/L. If albumin is lower than globulin, it means that there is an A/G inversion, which means that albumin is lower or globulin is higher, and albumin is higher than globulin, which causes A/G inversion. It is mainly seen in severe impaired liver function or M-proteinemia, such as chronic moderate on persistent hepatitis, as well as cirrhosis, primary liver cancer, and multiple myeloma, all of which can have A/G inversions.