GPT and primary hypertrophic osteoarthropathy: There were significant differences in all covariates among the BMI category, including age, AL, ALT, AST, ALP, BUN, CAL, CPK, BC, CR, GGT, GLU, IR, PHO, BIL, PRO, UA, SOD, POT, CL, OSM, GLO, gender, race, and EL.