Also called: Blood sugar test, Glucose test, Diabetes test
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Fasting Blood Sugar (FBS) measures blood glucose levels after an 810 hour fast. It is one of the primary tests used to diagnose and monitor diabetes mellitus and assess baseline glucose control.
Diagnose diabetes or prediabetes
Monitor glucose control
Screen high-risk individuals
Fasting levels reflect how well insulin regulates glucose when the body is at rest.
Fast for 810 hours
Only water allowed
Normal: <100 mg/dL
Prediabetes: 100125 mg/dL
Diabetes: ≥126 mg/dL
Can stress raise fasting sugar? Yes, stress can temporarily raise fasting blood sugar levels by triggering the release of hormones like cortisol and adrenaline, which increase glucose production in the body, but this effect usually resolves once stress is managed.
Is fasting mandatory? Yes, fasting for at least 810 hours is mandatory for accurate FBS results, as it ensures the measurement reflects your body's baseline glucose levels without interference from recent food intake.
Is one test enough for diagnosis? No, a single FBS test is not sufficient for a diabetes diagnosis; it typically requires confirmation with a repeat test on a different day or additional tests like an oral glucose tolerance test or HbA1c to rule out temporary fluctuations.
Can medicines affect results? Yes, certain medications such as steroids, beta-blockers, or diuretics can affect FBS results by altering glucose metabolism, so it's important to inform your doctor about all current prescriptions before testing.
How often should it be checked? It should be checked as advised by your doctor, typically every 13 years for screening in low-risk individuals or more frequently (e.g., quarterly) for those with diabetes or prediabetes to monitor control and adjust treatment.
The Fasting Blood Sugar test measures your sugar level after an overnight gap without food. It is advised if:
Tapadia Diagnostic Centre in Secunderabad offers NABL-accredited Fasting Blood Sugar Test test from a Blood sample(s). Blood sugar test, Glucose test, Diabetes test is also prescribed for Thirst, frequent peeing, tiredness, blurry vision. Established in 1989, this doctor-led diagnostic centre ensures high accuracy. Home sample collection and walk-in facility available at our Secunderabad center. Pay at the centre with no advance payment. Book online or visit us.
Sree Ranganatha Swamy Devasthanam, Yapral, H.No. 5-3-1, Bhagat Singh Nagar, Yapral
Services: Lab, ECG
Branch Incharge: Mr. Praveen Gupta : 9848056578
59/1/2(6-1R-002), Karkana,Secunderabad-09
Services: Lab, X Ray, ECG
Phone No: 9281063662
Branch Incharge: Mr. ASHOK : 9246846874
6-1-103, Ground Floor, Padma raonagar, Secunderabad.
Services: Lab, X Ray, ECG, U/S Scan
Phone No: 9390110059
Branch Incharge: Mr. Suman- 8179607955
Fasting Blood Sugar Test in Secunderabad
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Four decades of practice
A family-run diagnostic centre, trusted by doctors and households since 1989


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