A 55-year-old patient is seen for a routine physical. The patient has gained 20 pounds since the last physical two years ago, which they attribute to a lack of exercise and a high-fat diet. The patient also reports increased stress in their life because of work and the additional responsibility of caring for their elderly father. Suspecting that the patient has developed diabetes, the physician orders a Hb A1C test, which is repeated two weeks later.
Laboratory Testing:
Initial Hb A1C = 6.8% (reference interval 4–6%)
Repeat Hb A1C (two weeks later) = 6.7% (reference interval 4–6%)
