Insulin-dependent diabetes mellitus (IDDM)

Annette Vizzetti has insulin-dependent diabetes mellitus (IDDM). She is a regular patient at Valley Clinic and has come in today for a regular health check. The physician is interested in knowing what Ms. Vizzetti’s average blood glucose levels have been for the last 2 to 3 months. Which of the following tests is the physician most likely to order?

a) Thyroid-stimulating hormone (TSH)

b) Hemoglobin A1c (HbA1c)

c) Fasting blood glucose

d) Glucose tolerance test (GTT)