Full formMedical & Health
FBSstands forFasting Blood Sugar
Full Form of FBS
What is FBS?
Fasting Blood Sugar (FBS) is a blood test that measures the level of glucose in the bloodstream after a period of at least eight hours of fasting, typically overnight. It is a fundamental diagnostic tool used to screen for, diagnose, and monitor diabetes mellitus and prediabetes. In India, where diabetes prevalence is among the highest globally, FBS is a routine investigation prescribed by general practitioners, endocrinologists, and during annual health check-ups. The test is performed in pathology labs, clinics, and hospitals across the country, often as part of a comprehensive metabolic panel. A normal FBS range is generally between 70 and 100 mg/dL; values consistently above 126 mg/dL indicate diabetes. For medical students in India, understanding FBS is crucial for biochemistry and clinical medicine exams, particularly when interpreting glucose metabolism disorders. The test is also central to public health campaigns like the National Programme for Prevention and Control of Non-Communicable Diseases. FBS is preferred over random blood sugar for initial screening due to its standardised protocol and lower variability. Patients are advised to avoid food, beverages (except water), and strenuous activity before the test. Results help guide treatment decisions, including dietary modifications, oral hypoglycaemic agents, or insulin therapy.
FBS का फुल फॉर्म
उपवास रक्त शर्करा
Example
After experiencing frequent thirst and fatigue, my doctor recommended an FBS test to check if I had diabetes.
FBS — frequently asked questions
What is the full form of FBS?
The full form of FBS is Fasting Blood Sugar, a test that measures glucose levels after an overnight fast.
What is the normal range for FBS in India?
The normal FBS range is 70 to 100 mg/dL; levels above 126 mg/dL indicate diabetes, while 100–125 mg/dL suggests prediabetes.
What is the difference between FBS and RBS?
FBS (Fasting Blood Sugar) is measured after at least 8 hours of fasting, while RBS (Random Blood Sugar) can be measured at any time without fasting. FBS is more standardised for diagnosis.