The glucose tolerance test is a procedure that measures blood sugar levels at different times to evaluate how the body responds to glucose.
Read moreThe glucose tolerance test assesses how efficiently the body processes sugar. The person first fasts, then blood sugar is measured, followed by drinking a glucose solution. Blood sugar is then checked after one hour and after two hours. The test includes: Fasting blood sugar to assess baseline glucose levels. One-hour glucose to evaluate the initial response. Two-hour glucose which is the most important value for diagnosing diabetes. This test helps diagnose diabetes, prediabetes, insulin resistance, and gestational diabetes.