The Glucose Tolerance Test - OGTT (70g) is a test used to evaluate how the body responds to glucose. The test begins by measuring blood glucose levels after fasting for 8-12 hours. The patient is then given a solution containing 70 grams of glucose, and blood samples are taken at specific intervals (usually after one and two hours) to measure blood sugar levels. This test helps diagnose diabetes, prediabetes, and assess insulin effectiveness. It is recommended for individuals who experience symptoms such as excessive thirst, frequent urination, or have a family history of diabetes.