ALB and diabetes mellitus: We chose eight variables, including age, gender, current history of medication therapy for diabetes, current history of smoking, current history of alcohol drinking, body mass index (BMI), hemoglobin A1c level and urinary albumin level, to investigate their relationships with urinary pteridine level, which has been proposed to be an oxidative stress marker in a general population [2] and has been shown to be associated with blood coagulation and atherosclerosis in the lower extremities of patients with diabetes [1].