In addition, when serum ferritin is a continuous variable in 3 models, this association remained significant, even if adjusted the common factors between hypertension and serum ferritin, including age, gender, race, family income, education level, BMI, smoking status, physical activity, health insurance status, total cholesterol, glycohemoglobin, albumin, white blood cell count, liver disease, kidney disease and dyslipidemia (Table 3). This evidence concerns the gene ALB and kidney disorder.