The tests that are usually needed to determine diabetes include blood glucose test, oral glucose tolerance test, glycated hemoglobin A1c, and so on. 1. Blood glucose test: This test can accurately detect abnormal changes in blood glucose, reflecting the body’s ability to maintain glucose metabolism homeostasis. Under normal circumstances, the fasting blood glucose of adults is 3.9~6.1mmol/L, and the blood glucose of 2 hours after meal is less than 7.8mmol/L. 2. Oral glucose tolerance test: this test is mainly to reflect the body’s ability to handle the sugar load, normal blood glucose peaks 0.5~1 hour after 75g of oral glucose, if the peak is delayed, it is necessary to pay attention to the presence of diabetes. 3. Glycated hemoglobin A1c: Glycated hemoglobin A1c reflects the average blood glucose level in the past 2~3 months, and the normal range is 4%~6%. If you suspect that you have diabetes, it is recommended that you go to the hospital in a timely manner and cooperate with the doctor to complete a series of related examinations.