Fasting Plasma glucose (FBS)

The Fasting Plasma Glucose (FPG) test measures your blood sugar level after an overnight fast. It’s used to diagnose diabetes and prediabetes. You’ll need to fast for at least 8 hours before the test, which means no food or drink except water. During the test, a healthcare provider will draw blood from your arm and send it to a lab for analysis. Normal FPG levels are typically between 70 and 100 milligrams per deciliter (mg/dL). Higher levels may indicate prediabetes or diabetes.