Glucose, Fasting LabCorp

Testing glucose (blood sugar) levels in a fasting state helps with the diagnosis of diabetes mellitus; evaluates carbohydrate metabolism disorders including alcoholism; evaluates acidosis and ketoacidosis; evaluates dehydration, coma, hypoglycemia of insulinoma, and neuroglycopenia. A fasting glucose that is >125 ng/dL on more than one occasion is adequate for the diagnosis of diabetes mellitus.