Blood Sugar Fasting Test

The Blood Sugar Fasting Test measures the amount of glucose present in the bloodstream after at least 8–12 hours of fasting. Blood glucose is the body’s primary energy source and its level reflects how effectively the body produces and utilizes insulin. This test is widely used as the initial screening tool to detect diabetes or prediabetes before symptoms become severe.

A fasting blood sugar level below 100 mg/dL is considered normal. Levels between 100–125 mg/dL indicate prediabetes, while a result of 126 mg/dL or higher on two separate measurements confirms diabetes. Regular monitoring is strongly recommended if you have a family history of diabetes, obesity, sedentary lifestyle, insulin resistance or are experiencing symptoms like chronic tiredness, slow healing wounds or frequent urination.

The test helps diagnose diabetes early, which is essential to prevent long-term damage to the heart, blood vessels, kidneys, nerves and eyes. Doctors rely on fasting sugar results to guide medication, diet planning and lifestyle intervention.

Measures fasting blood glucose levels to detect diabetes, prediabetes and abnormal metabolic response.