Additionally, age, lipid-lowering agent, PMMA, albumin, AST, ALT, hemoglobin, total-bilirubin, ferritin, iron, TIBC, potassium, and uric acid were significantly associated with serum LDL levels, while the male gender, diabetes, BMI, HD time, Kt/V, albumin, AST, ALT, total bilirubin, ferritin, iPTH, potassium, iCa, and uric acid were related to serum HDL levels (Table 3). This evidence concerns the gene GPT and diabetes mellitus.