The expected values for normal fasting blood glucose concentration are between 70 mg/dL (3.9 mmol/L) and 100 mg/dL (5.6 mmol/L). When fasting blood glucose is between 100 to 125 mg/dL (5.6 to 6.9 mmol/L) changes in lifestyle and monitoring glycemia are recommended.

A fasting blood sugar between 110 and 125 would be considered in the “prediabetes” range. Less than 110 is normal and greater than 126 is diabetes.

One observational study showed that those who drank more water had a lower risk for developing high blood sugar levels ( 16 ). Drinking water regularly helps rehydrate the blood, lowers blood sugar levels, and could reduce diabetes risk ( 16 , 17 , 18 , 19 ).

Fasting. A fasting blood glucose reading is taken after you have gone without food and liquid other than water for at least eight hours. The American Diabetes Association (ADA) states that a normal reading after fasting will range from 70 to 130 mg/dl. Diabetes is usually diagnosed after consecutive readings in excess of 126 mg/dl.

Blood tests that you will likely need to fast for include: blood glucose test. liver function test. cholesterol test. triglyceride level test. high-density lipoprotein (HDL) level test. low-density lipoprotein (LDL) level test. basic metabolic panel.

TAKE-HOME TIPS. Basically normal fasting blood sugar levels are considered fasting blood sugar levels between 80 mg/dl and 100 mg/dl.

Normal blood sugar varies from person to person, but a normal range for fasting blood sugar (the amount of glucose in your blood six to eight hours after a meal) is between 70 and 100 milligrams per deciliter.