The Postprandial Blood Sugar (PPBS) test measures blood glucose levels two hours after a meal to assess how the body processes sugar. It helps diagnose diabetes, prediabetes, and insulin resistance by evaluating how effectively insulin regulates blood sugar after food intake. PPBS is particularly useful in monitoring diabetic patients' treatment effectiveness and detecting abnormal glucose metabolism. A high PPBS level may indicate diabetes mellitus, while consistently low levels could suggest hypoglycemia or other metabolic disorders. This test is essential for individuals with risk factors like obesity, family history, or gestational diabetes to maintain optimal glucose control.