Fasting Glucose - FBS

FASTING GLUCOSE- FBS Test

The Fasting Blood Sugar (FBS) test, also called Fasting Plasma Glucose (FPG), measures the amount of glucose in the blood after an overnight fast. Glucose is the body's main source of energy, and this test helps assess how effectively the body regulates blood sugar.

The FBS test is commonly used to screen for diabetes and prediabetes, monitor blood glucose levels in people with diabetes, and assess the risk of developing blood sugar-related complications. It may also be recommended when symptoms such as excessive thirst, frequent urination, unexplained weight changes, or fatigue are present.

For accurate results, fasting is generally required before the sample is collected. Follow the fasting instructions provided by your healthcare provider or diagnostic laboratory.

This Test is Recommended for Individuals:

• Individuals undergoing routine diabetes screening
• People with a family history of diabetes
• Individuals who are overweight or have other diabetes risk factors
• People experiencing excessive thirst or frequent urination
• Individuals with unexplained fatigue or changes in weight
• Patients diagnosed with diabetes or prediabetes who require monitoring
• Pregnant women when blood glucose testing is recommended by their healthcare provider
• Individuals undergoing a routine health or full-body check-up
• People whose healthcare provider recommends evaluation of blood glucose levels

FAQs

1. How long should I fast before an FBS test?
Typically, an FBS test requires an overnight fast of at least 8 hours. During the fasting period, avoid food and caloric drinks. Plain water is generally permitted. Follow the specific instructions provided by your healthcare provider or laboratory.

2. What does a high fasting blood glucose level mean?
A higher-than-normal fasting glucose level may indicate prediabetes or diabetes, depending on the level and clinical context. A single abnormal result may need confirmation with repeat testing or another diabetes test such as HbA1c or an oral glucose tolerance test (OGTT).

3. Can I drink water before an FBS test?
Yes, plain water is generally allowed during fasting and can help prevent dehydration. Avoid sugary drinks, tea, coffee with milk or sugar, and other caloric beverages unless your healthcare provider gives different instructions.