Diabetes mellitus is diagnosed by symptoms of diabetes mellitus plus a random blood glucose ≥11.1 mmol/L, or a 2-hour glucose from the glycemic load ≥11.1 mmol/L, or a fasting blood glucose ≥7.0 mmol/L. Typical symptoms of diabetes mellitus are three more and one less, i.e. polyuria, polydipsia, polyphagia, and weight loss. Fasting blood glucose ≥7.0 mmol/L, or 2-hour post glycemic load blood glucose ≥11.1 mmol/L, or random blood glucose ≥11.1 mmol/L with symptoms of triple polydipsia are considered diagnostic of diabetes mellitus. Diabetes mellitus was also considered in the absence of symptoms of diabetes mellitus with fasting blood glucose ≥7.0 mmol/L or two-hour postprandial blood glucose ≥11.1 mmol/L on two occasions not on the same day. Random blood glucose is defined as blood glucose measured at any point in time, and fasting blood glucose is defined as blood glucose measured after no caloric intake for at least 8 hours. To confirm the diagnosis of diabetes, it is recommended to go to the hospital for a definitive diagnosis under the supervision of a doctor.