The Glucose test is a blood test used to screen for diagnose and monitor conditions that affect glucose levels such as prediabetes, diabetes, hyperglycemia, and hypoglycemia.

Serum glucose levels may be abnormally high (hyperglycemia) or abnormally low (hypoglycemia). Glucose measurements are used in the diagnosis and treatment of carbohydrate metabolic disorders including diabetes mellitus, idiopathic hypoglycemia, and pancreatic islet cell neoplasm.

Patient Preparation: Fasting preferred. Fasting is defined as no consumption of food or beverage other than water for at least 8 hours before testing.