In addition, we provided discriminant functions to assist clinicians in identification of these subtypes without advanced diagnostic technology as follows: once serum enzyme levels (ALT, AST, ALP, and LDH) are measured in patients of known age, clinicians can make a probable diagnosis of BMD when Y1 is greater than Y2 or of LGMD when Y2 is greater than Y1. Here, GPT is linked to limb-girdle muscular dystrophy.