The FBS test, or Fasting Blood Sugar test, measures the amount of glucose (sugar) in your blood after you haven't eaten for at least 8 hours. It's a common and important tool used to screen for and diagnose prediabetes and diabetes.
Why is the FBS Test Performed?
The FBS test is performed for several reasons:
- Screening for Prediabetes: It helps identify individuals who have higher-than-normal blood sugar levels but not high enough to be diagnosed with diabetes.
- Diagnosing Diabetes: If your fasting blood sugar is consistently high, it can indicate that you have diabetes.
- Monitoring Diabetes Treatment: For individuals already diagnosed with diabetes, the FBS test helps monitor the effectiveness of their treatment plan (e.g., diet, exercise, medication).
How is the FBS Test Performed?
- Fasting: You'll need to fast for at least 8 hours before the test. This means no food or sugary drinks. Water is usually allowed.
- Blood Draw: A healthcare professional will draw a blood sample, usually from a vein in your arm.
- Analysis: The blood sample is sent to a lab where the glucose level is measured.
Understanding FBS Test Results:
Here's a general guide to interpreting FBS test results (values may vary slightly depending on the lab):
| Category | Fasting Blood Sugar (mg/dL) | Interpretation |
|---|---|---|
| Normal | Less than 100 | Healthy blood sugar level. |
| Prediabetes | 100 to 125 | Indicates an increased risk of developing type 2 diabetes. |
| Diabetes | 126 or higher (on 2 tests) | Suggests diabetes. Requires confirmation with a second FBS test on a different day. |
It's important to discuss your FBS test results with your doctor for a proper diagnosis and to determine the best course of action. They may recommend lifestyle changes (like diet and exercise) or medication if needed.
