Skip to main content

Fasting Glucose

Meaning

Fasting glucose is a clinical biomarker that measures the concentration of glucose, the body’s primary energy source, in the peripheral blood after an overnight fast, typically lasting eight to twelve hours. This test is a fundamental tool for assessing carbohydrate metabolism and is critical for screening, diagnosing, and monitoring prediabetes and diabetes mellitus. A persistently elevated fasting glucose level indicates impaired glucose regulation, often signaling underlying insulin resistance or pancreatic beta-cell dysfunction. Maintaining fasting glucose within an optimal range is a key objective in metabolic and hormonal wellness.