Insulin (Fasting)

Fasting Insulin measures the level of insulin hormone after an overnight fast. Insulin regulates blood glucose uptake into cells. Elevated fasting insulin (hyperinsulinemia) is an early sign of insulin resistance, often preceding elevations in glucose or HbA1c. Maintaining low fasting insulin levels is crucial for metabolic health and longevity. Note: Results are highly unreliable if not measured in a truly fasted state (8-12 hours).