What laboratory examinations are recommended for patients not known to have diabetes mellitus?
For patients not known to have diabetes mellitus, a fasting blood glucose measurement and a lipid profile should be obtained every 3 years and glycosylated hemoglobin should be measured at least annually to assess glycemic control. Measurement of creatinine kinase also could be appropriate at these times, as well as measurements of hemoglobin, thyroid function, serum electrolytes, and renal function annually or sooner when prompted by a change in symptoms or signs.