The Oral Glucose Tolerance Test (OGTT) Non-Pregnant (75 grams) is a diagnostic test used to assess how the body processes glucose and to diagnose conditions like diabetes and insulin resistance. The test involves drinking a solution containing 75 grams of glucose after fasting overnight, followed by multiple blood draws at specific intervals (usually after 1 and 2 hours) to measure blood glucose levels. The test evaluates the body’s ability to regulate blood sugar and helps detect impaired glucose tolerance or diabetes. It is commonly administered when an individual has risk factors for diabetes, such as obesity, a family history of the disease, or symptoms like excessive thirst, frequent urination, or unexplained weight loss. The OGTT may also be used to confirm a diagnosis of diabetes or to monitor individuals with prediabetes or a history of gestational diabetes.