Multivariate logistic regression analysis was conducted to assess the predictive factors for vitamin D deficiency, incorporating sex, age, ALT, hemoglobin, platelet count, red cell distribution width (RDW), NLR, MHR, UHR, white blood cell count (WBC), and LDL-C/HDL-C as potential predictors. The gene discussed is GPT; the disease is vitamin D deficiency.