Glucose F test determines your blood sugar level after fasting. It is also called the "Fasting Glucose Test" (FGT). The test measures your blood sugar level after you haven't eaten for at least 8 hours. This test helps diagnose diabetes or prediabetes. This test is preferably conducted in the morning because there has been a long gap since you last ate. It gives clues about how your body is managing blood sugar. Your blood sugar levels usually peak after an hour of eating something and after that, it begins to decline.
You need a Glucose F test if you’re showing signs of diabetes or prediabetes such as
- Unexplained thirst.
- Frequent urination.
- Very slow healing of wounds.
- Blurred vision.
- Fatigue without no apparent reason.
- Your body needs glucose for energy.
It gets this glucose from the food you consume. Since the body doesn't need to use up all the glucose that it is getting, the insulin hormone stores the excess glucose safely and then releases it as and when needed by your body.
When you eat food with high glucose content, insulin breaks it down, lowers your blood sugar levels and stores it for later use. If the blood sugar levels are high, it means either your body is unable to produce enough insulin or the insulin that your body is producing is unable to handle glucose. The Glucose F test indicates whether the insulin inside your body is processing glucose or not.