Type 1 Diabetes Mellitus
Alternate Names : Insulin-Dependent Diabetes Mellitus, IDDM, Type 1 Diabetes Mellitus
How is the disease diagnosed?
A medical history and physical exam often lead a doctor to
suspect type 1 diabetes. Diabetes is diagnosed on the basis of a
high glucose level in the blood.
A blood sample can be measured at a random time or after an
8-hour fast. After an 8-hour fast, the normal blood glucose level is less than
110 mg/dL, or milligrams per deciliter. A
fasting blood glucose
level of 126 mg/dL or higher on two separate days usually indicates diabetes.
When blood is taken randomly or without fasting first, a blood
glucose level of 200 mg/dL or higher on two separate days usually indicates diabetes.
Additional blood tests can help distinguish between type 1
diabetes and other types of diabetes. The level of ketones, for example, can
be measured. Ketones are usually elevated only in type 1 diabetes.