Oral Glucose Tolerance Test, OGTT

Name: Oral Glucose Tolerance Test, OGTT
Brand: Torrent Diagnostics
Price: 150 INR
Availability: InStock

Includes 2 Parameters

Rs.150

Sample Type

Blood

Test Code

#GB227

Fasting

Yes

Report within

24 Hours

The Oral Glucose Tolerance Test (OGTT) is a detailed blood test used to check how well your body processes sugar (glucose) over time. Unlike a single blood sugar test, OGTT measures your blood glucose levels at multiple intervals after you consume a measured glucose drink.

The test usually starts with a fasting blood sample, followed by drinking a glucose solution. Blood samples are then taken at specific intervals (commonly after 1 hour and 2 hours) to see how your body responds.

Doctors recommend OGTT to diagnose diabetes, prediabetes, and gestational diabetes, especially when other tests are borderline or unclear. It is considered one of the most sensitive tests for detecting problems with glucose metabolism.

At Torrent Diagnostics, the test is conducted using standardized protocols and accurate methods, ensuring reliable and precise results.

Why is the Test Done?

This test helps to:

Diagnose diabetes and prediabetes
Detect gestational diabetes during pregnancy
Evaluate how the body processes glucose over time
Confirm borderline results from other sugar tests
Assess insulin response

Who Should Get Tested?

OGTT is commonly used in India for gestational diabetes screening.

You may need this test if you:

Have borderline blood sugar levels
Show symptoms of diabetes
Are pregnant (usually between 24-28 weeks)
Have a family history of diabetes
Are overweight or have a sedentary lifestyle

Fall under high-risk groups for diabetes like:

Pregnant women
Individuals with prediabetes
People with obesity
Those with history of gestational diabetes

How to Read the Results?

OGTT results are based on fasting and post-glucose values.

Fasting Blood Sugar

Values	What it Means
Below 100 mg/dL	Normal
100-125 mg/dL	Prediabetes
126 mg/dL or above	Diabetes

2-Hour Value After Glucose Drink

Values	What it Means
Below 140 mg/dL	Normal
140-199 mg/dL	Prediabetes
200 mg/dL or above	Diabetes

Doctors consider both fasting and post-glucose values for diagnosis.

What to Ask the Doctor?

Questions you can ask your doctor during the evaluation are:

Are my glucose levels normal at all stages of the test?
Do I have prediabetes or diabetes?
Do I need lifestyle changes or medication?
If pregnant, do I have gestational diabetes?
How often should I repeat this test?

How our test process works!

STEP 01

Identity Verified at Every Step

Verified identity at every step to eliminate sample mix-ups

STEP 02

Sterile, Barcoded Collection

Sterile, barcoded collection to maintain sample integrity

STEP 03

Expert-Led Sample Collection

Trained professionals ensuring safe, accurate, and comfortable collection

FAQs To Help You Know Better

Do I need to fast before the test?

Yes, fasting for 8-10 hours is required before the test to get an accurate baseline reading.

How long does the test take?

The test usually takes about 2-3 hours, depending on how many samples are required.

Is the glucose drink safe?

Yes, the glucose drink is safe for most people, although some may feel mild nausea due to its sweetness (high sugar content).

Why is OGTT more detailed than other sugar tests?

Unlike single tests, OGTT tracks how your body processes sugar over time, making it more sensitive in detecting early abnormalities.

Can OGTT diagnose gestational diabetes?

Yes, it is one of the main tests used to diagnose gestational diabetes during pregnancy.

What causes abnormal OGTT results?

Abnormal results may be due to insulin resistance, diabetes, hormonal changes during pregnancy, or lifestyle factors.

Are there any side effects of the test?

Most people do not experience side effects, but some may feel slight dizziness or nausea during the test.

How should I prepare for the test?

You should fast overnight, avoid heavy exercise before the test, and follow your doctor’s instructions carefully.

How often should I take OGTT?

The frequency depends on your risk factors and doctor’s advice. Pregnant women may need it once during pregnancy, while others may take it if indicated.