GPT and familial hypercholesterolemia: Blood laboratory tests showed combined hypercholesterolemia (triglycerides [TG] 81 mg/dl, cholinesterase [CHE] 334 mg/dl, low-density lipoprotein [LDL] 249.89 mg/dl, slightly elevated liver enzymes, gamma-glutamyl transferase [GGT] 103 U/l, glutamic-pyruvic transaminase [GPT] 55 U/l) were not reproducible by further testing.