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