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What is a GLUCOSE TOLERANCE TEST ORAL (OGTT) 2 SAMPLES?

The Oral Glucose Tolerance Test (OGTT) with 2 samples is a diagnostic test used to evaluate how the body processes glucose and to detect conditions like diabetes or prediabetes. The procedure involves measuring fasting blood glucose first, then giving the patient a glucose-rich drink. After two hours, a second blood sample is taken to assess how efficiently the body clears glucose from the bloodstream. This helps doctors understand the body’s insulin response and glucose metabolism.

Additional Information

Also known as/ Other names: Oral Glucose Tolerance Test (OGTT) – 2 Point / 2 Samples, 2-Sample OGTT, Glucose Tolerance Test (Oral) – 2 Specimens, Oral GTT (2 Samples), Blood Sugar Tolerance Test – Oral (2 Samples)
Parameters: 1
Recommended for: M/F/Others
Sample Type: Blood & Urine
Patient Preparation: Overnight fasting is mandatory
Reports: Same Day

FAQs

What is the purpose of the OGTT?

It checks how your body processes glucose, helping diagnose diabetes, prediabetes, or gestational diabetes by measuring blood sugar before and after consuming a glucose drink.

Why is the OGTT recommended instead of a simple blood sugar test?

Unlike a single blood sugar test, OGTT shows how your body manages glucose over time, offering a clearer picture of insulin function and metabolic health.

How much glucose do I have to drink?

Typically, 75 grams of glucose dissolved in water is given to adults for the test.

Can pregnancy affect OGTT results?

Pregnancy can alter glucose metabolism, so OGTT is often used to diagnose gestational diabetes.

How often should this test be repeated if results are borderline?

If results are borderline, doctors may recommend repeating the test annually or sooner depending on risk factors.

What do the results mean if my blood sugar is high after 2 hours?

Elevated glucose after two hours suggests impaired glucose tolerance or diabetes, requiring further medical evaluation.

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