There were no significant differences in gender, hemoglobin, albumin, alanine aminotransferase, aspartate aminotransferase, alkaline phosphatase, γ-glutamyltransferase, total cholesterol, triglyceride, combined hypertension, and combined diabetes mellitus between the liver injury group, and the non-liver injury group (P > .05 in all). Here, GPT is linked to diabetes mellitus.