This test measures your blood sugar levels after you have not eaten for a while. It helps to check how your body is handling sugar and can be used to screen for or monitor diabetes.
When is it needed?
Screening for diabetesMonitoring diabetesUnexplained weight lossFrequent urinationIncreased thirst
How to prepare
You need to fast for 8-12 hours before this test. You can drink water but should not eat or drink anything else. Your doctor will tell you the best time to take the test.
More about this test
This test measures your blood sugar levels after you have not eaten for a while. It helps to check how your body is handling sugar and can be used to screen for or monitor diabetes.
Medically reviewed by: Locatemycentre editorial team. Informational only; not medical advice. Always consult a licensed physician for diagnosis or treatment.
Find Glucose Fasting near you
Browse verified centres offering Glucose Fasting in major Indian cities.
This test measures your blood sugar levels after you have not eaten for a while. It helps to check how your body is handling sugar and can be used to screen for or monitor diabetes.
Do I need to fast before a Glucose Fasting?
You need to fast for 8-12 hours before this test. You can drink water but should not eat or drink anything else. Your doctor will tell you the best time to take the test.
How much does a Glucose Fasting cost in India?
Prices for Glucose Fasting vary widely by city, lab, and accreditation. As a rule of thumb, NABL-accredited labs in metros are more expensive than standalone neighbourhood labs. Use Locatemycentre to compare verified centres near you.
Can I get a Glucose Fasting with home sample collection?
Yes. Almost every NABL-accredited diagnostic centre in metros like Bangalore, Delhi, Mumbai, Chennai and Hyderabad offers home sample collection for Glucose Fasting. Book the night before, especially for any fasting tests, and confirm the visit fee (typically ₹100-₹250).
How long do Glucose Fasting results take?
Most routine Glucose Fasting reports are ready within 6-24 hours of sample collection. Specialised assays and tests sent to a parent lab may take 2-7 days. Confirm the exact turnaround with the centre before booking - it matters if you have a follow-up consult scheduled.
How will I receive the report?
Reports are emailed as a PDF and are usually downloadable from the centre's patient portal using your registration ID. Hard-copy collection at the counter is usually free; courier delivery is optional. Save the digital copy - your physician will want to see it alongside any prior reports.
Do I need a doctor's prescription for a Glucose Fasting?
For most routine versions of Glucose Fasting you can walk in without a prescription. Some advanced or restricted tests require a referral by law, and a physician's involvement is always recommended so the result is interpreted against your symptoms and history.
When should I repeat a Glucose Fasting?
Repeat timing depends on the clinical reason for the test. For monitoring a known condition, your physician will set the interval (often every 3-6 months). For a screening test that came back normal, repeat as part of your annual health check unless your doctor advises otherwise.