GTT (75gm glucose), in Kolkata

Fasting and dietary instructions:

Fast for 8 to 12 hours before the test. Water is allowed and encouraged , drink 2 to 3 glasses before leaving home. Avoid tea, coffee, juice, food, alcohol, and supplements during the fasting window.

Medication guidance:

If you are on insulin or oral hypoglycaemic medication, follow your doctor's specific advice. For most fasting glucose tests, take medication after the sample is collected. HbA1c timing does not affect results.

What to bring:

Carry your doctor's test order, a government-issued photo ID, and your OPD insurance card. If you have had this test before, bring previous reports , your doctor can compare results over time.

Timing:

Morning slots are recommended for most blood tests. Most markers are most stable before meals and activity. GetVisit home collection in Kolkata is available from 6:00 AM, including in EM Bypass and Kalighat.

Single standalone test:

GTT (75gm glucose). Can be ordered individually or as part of a preventive health package on GetVisit.

When does a doctor order GTT (75gm glucose)?

GTT (75gm glucose) is the cornerstone of diabetes screening and management , ordered from the first suspicion of pre-diabetes right through to monitoring treatment adequacy in patients on insulin or oral medication.

Who should get GTT (75gm glucose) done in Kolkata?

West Bengal consistently reports above-average diabetes prevalence. Kolkata's urban diet , dominated by white rice, refined flour sweets, and deep-fried snacks , combined with sedentary lifestyles in Park Street, Salt Lake, and New Town creates significant metabolic risk from age 28 onwards. GTT (75gm glucose) is part of diabetes screening and gestational diabetes evaluation. Doctors may order it if you have symptoms like excessive thirst, frequent urination, unexplained tiredness, or if routine blood sugar tests are borderline. Adults above 30 in Kolkata benefit from periodic health screening that includes GTT (75gm glucose) as part of a broader preventive panel. Residents of Garia, Tollygunge, and across the city with chronic conditions, those on long-term medication, and individuals with a relevant family history should test at the frequency their specialist recommends.

What conditions can GTT (75gm glucose) help diagnose?

The conditions diagnosable through GTT (75gm glucose) depend on the specific markers the test measures. Results either confirm a suspected diagnosis, support a clinical suspicion requiring further investigation, or effectively exclude the condition the test was screening for.

What do GTT (75gm glucose) results mean?

Fasting glucose 70–99 mg/dL: normal. Fasting glucose 100–125 mg/dL: pre-diabetes , diet, exercise, and weight loss can prevent progression in over 60% of cases. Above 126 mg/dL on two occasions: type 2 diabetes. HbA1c below 5.7%: normal. HbA1c 5.7–6.4%: pre-diabetes. HbA1c above 6.5%: diabetes. HbA1c above 8% in a known diabetic: poor glycaemic control requiring medication adjustment.

How often should GTT (75gm glucose) be repeated?

For preventive screening with a normal baseline: annually for most adults above 35. For monitoring a known condition: at the interval your specialist recommends , typically every 3 to 6 months for active conditions and annually for stable, well-controlled ones.

What happens after GTT (75gm glucose) results are ready?

Once your results appear in your GetVisit profile, discuss them with your doctor or a GetVisit-verified specialist. Your doctor will interpret each value in the context of your full health history, current medications, and symptoms , and advise on the next step: lifestyle change, repeat testing, medication adjustment, or specialist referral. All GetVisit reports are stored permanently and can be shared with any doctor instantly.