GLUCOSE CHALLENGE TEST (75g) - OBSTETRICAL
(Flat ₹11 OFF - Sanovra Lab)
Report Time: Same Day 5:30 PM | Sample: Plasma (2 Hours after 75g Glucose) | Test Code: BC111
The 75g Glucose Challenge Test (Obsterical) is a comprehensive diagnostic tool used during pregnancy to detect Gestational Diabetes Mellitus (GDM).
This test is unique because it is often used as a One-Step Diagnostic Test. Unlike the 50g screening test which requires a second follow-up if positive, the 75g test is powerful enough to confirm Gestational Diabetes in a single visit. It follows the guidelines set by major health organizations (like DIPSI in India and WHO globally).
Why 75g? The One-Step Advantage
Traditionally, pregnant women had to do a 50g test, and if they failed, come back another day for a long 100g test. The 75g Glucose Test simplifies this.
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✔Higher Accuracy: It places a slightly higher load on the body than the 50g test, making the results more definitive.
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✔Convenience: It serves as both screening and diagnosis, saving the mother from multiple lab visits.
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✔International Standard: It aligns with WHO (World Health Organization) and DIPSI (Diabetes in Pregnancy Study Group India) guidelines.
Procedure: DIPSI vs. WHO
There are two ways this test is performed. Your Gynecologist will specify which protocol to follow:
1. DIPSI Method (Non-Fasting - Common in India)
This is popular because pregnant women often find fasting difficult.
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➤Preparation: No fasting required. You can have your normal meal.
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➤Dose: Drink 75g of glucose dissolved in water.
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➤Sample: A single blood sample is taken exactly 2 hours later.
2. WHO / IADPSG Method (Fasting)
This is the international gold standard.
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➤Preparation: Fasting of 8-10 hours is required.
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➤Dose: Drink 75g of glucose.
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➤Samples: Blood is drawn at Fasting (0 hr), 1 Hour, and 2 Hours.
Interpreting Results (2-Hour Value)
For the standard 2-Hour post-glucose value, the following thresholds generally apply:
| 2-Hour Glucose Level | Result Interpretation |
|---|---|
| Below 140 mg/dL | Normal. You do not have gestational diabetes. |
| 140 mg/dL or Higher | Gestational Diabetes (GDM). Your body is struggling to process sugar. Your doctor will recommend diet changes or insulin. |
Frequently Asked Questions (FAQs)
75g is a significant amount of sugar (about equal to 2 cans of soda). Some women feel nauseous or dizzy. It helps to sip it slowly over 5 minutes rather than gulping it down. Sit quietly during the waiting period.
It is usually performed between the 24th and 28th week of pregnancy. However, women with high risk (obesity, family history) may be tested in the first trimester.
Glucose is inexpensive, and the test only requires basic chemistry analysis (GOD-POD method). It is a public health priority to keep this test affordable for all pregnant women.
Healthy Mom, Healthy Baby
Ensure a safe pregnancy by screening for Gestational Diabetes. Book your 75g Glucose Test today.
Disclaimer: The information provided here is for educational purposes only and does not constitute medical advice. Laboratory results should always be interpreted by a qualified Gynecologist.