Glucose Tolerance Test (2 Hours, 3 Sample)

This test measures how well your body processes glucose after consuming a specific amount of glucose solution. It assesses your body's ability to regulate blood sugar levels and detect conditions like diabetes.

This test is done for the following reasons:

• To diagnose diabetes or gestational diabetes during pregnancy
• To evaluate insulin resistance and impaired glucose tolerance
• To monitor the effectiveness of treatment for diabetes
• To assess pancreatic function and screen for prediabetes in high-risk individuals

Your doctor may recommend this test if you:

• Show symptoms of diabetes, such as increased thirst or frequent urination
• Have risk factors for gestational diabetes during pregnancy
• Are being monitored for prediabetes or impaired glucose tolerance
• Need to evaluate the effectiveness of your diabetes management plan

The normal range for fasting blood sugar levels is typically below 100 mg/dL, and levels above 200 mg/dL two hours after ingestion of the glucose solution may indicate diabetes. Abnormal results can suggest conditions like prediabetes, impaired glucose tolerance, or gestational diabetes. However, further diagnostic tests and consultation with your doctor are necessary to confirm any diagnosis.

• You will be asked to fast for a specific duration before the test.
• Blood samples will be taken at different intervals after drinking a glucose solution.

You may experience mild discomfort during blood sample collection, but the procedure is generally painless

• Fast for 8-10 hours before the test, which includes avoiding food and drink (except water).
• Inform your doctor about any medications or supplements you are taking that may affect the test results.
• Avoid strenuous exercise or smoking on the day of the test.
• Follow any additional instructions provided by your doctor.

• Fasting Plasma Glucose Test: This measures your blood sugar levels after an overnight fast
• Hemoglobin A1c Test: This provides an average blood sugar level over the past few months
• Oral GTT: Similar to GTT, but only includes fasting and two-hour post-glucose measurements

Oral Glucose Tolerance Test (OGTT)

Diabetes is a chronic condition characterised by high blood sugar levels. It occurs when your body either does not produce enough insulin or cannot effectively use the insulin it produces. Diabetes can lead to various complications if left unmanaged.