The Fasting Blood Sugar (FBS) test measures the amount of sugar (glucose) in your blood after a period of not eating. This test helps to check if your blood sugar levels are healthy, which is important for managing or detecting diabetes. Glucose is your body's main source of energy, and high levels can indicate a problem.
When is it needed?
Diagnosing diabetesMonitoring diabetesScreening for prediabetesUnexplained weight lossIncreased thirstFrequent urination
How to prepare
You will need to fast for 8-12 hours before this test. You can drink water during this time, but avoid all other food and beverages. Continue to take your regular medications unless your doctor tells you otherwise.
More about this test
The Fasting Blood Sugar (FBS) test measures the amount of sugar (glucose) in your blood after a period of not eating. This test helps to check if your blood sugar levels are healthy, which is important for managing or detecting diabetes. Glucose is your body's main source of energy, and high levels can indicate a problem.
Typical price in India
₹90
Based on 176 centres listing this test. Prices vary by city, lab, and accreditation.
Medically reviewed by: Locatemycentre editorial team. Informational only; not medical advice. Always consult a licensed physician for diagnosis or treatment.
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Browse verified centres offering Fasting Blood Sugar (FBS) Test in major Indian cities.
The Fasting Blood Sugar (FBS) test measures the amount of sugar (glucose) in your blood after a period of not eating. This test helps to check if your blood sugar levels are healthy, which is important for managing or detecting diabetes. Glucose is your body's main source of energy, and high levels can indicate a problem.
Do I need to fast before a Fasting Blood Sugar (FBS) Test?
You will need to fast for 8-12 hours before this test. You can drink water during this time, but avoid all other food and beverages. Continue to take your regular medications unless your doctor tells you otherwise.
How much does a Fasting Blood Sugar (FBS) Test cost in India?
Fasting Blood Sugar (FBS) Test typically costs around ₹90 at most Indian diagnostic centres, though prices vary by city, lab, and accreditation. WhatsApp two or three centres on Locatemycentre with the test name and pick the lowest NABL-accredited quote.
Can I get a Fasting Blood Sugar (FBS) Test 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 Fasting Blood Sugar (FBS) Test. Book the night before, especially for any fasting tests, and confirm the visit fee (typically ₹100-₹250).
How long do Fasting Blood Sugar (FBS) Test results take?
Most routine Fasting Blood Sugar (FBS) Test 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 Fasting Blood Sugar (FBS) Test?
For most routine versions of Fasting Blood Sugar (FBS) Test 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 Fasting Blood Sugar (FBS) Test?
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.