Fasting blood sugar levels fall between 70 and 100 (mg/dL).

Post-Meal Levels: After a meal, blood sugar levels are usually below 140 mg/dL two hours later.

A1c Levels: Normal A1c levels, a measure of average blood sugar over a period of 3 months, are typically below 5.7%.

Prediabetes Range: Fasting blood sugar levels between 100 mg/dL and 125 mg/dL may indicate prediabetes.

Diabetes Diagnosis: A fasting blood sugar level of 126 mg/dL or higher on two separate occasions usually indicates diabetes.

A random blood sugar reading of 200 mg/dL or higher, along with diabetes symptoms, may also lead to a diabetes diagnosis.

Individual Variations: Some people may naturally have slightly higher or lower blood sugar levels while remaining healthy.