The nurse is explaining the role of insulin in diabetes mellitus. Which statement by the client indicates a need for further clarification?

The HbA1c test measures the average blood glucose level over the past 2-3 months and provides information about long-term glucose control. It is commonly used to monitor diabetes management and assess the effectiveness of treatment.

Incorrect choices:

a. This choice is incorrect. The fasting blood glucose test measures blood glucose levels after an overnight fast and provides information about current glucose levels, not long-term control.

b. This choice is incorrect. The OGTT measures the body's ability to clear glucose from the blood and is used to diagnose diabetes and impaired glucose tolerance, but it is not typically used for assessing long-term glucose control.

d. This choice is incorrect. The C-peptide test is used to assess insulin production by the pancreas and is not typically used to assess long-term glucose control.

Basal-bolus insulin therapy involves administering a continuous basal insulin infusion to provide background insulin coverage and delivering bolus doses of insulin before meals to cover postprandial glucose elevations.

Incorrect choices:

a. This choice is incorrect. Oral antidiabetic medications are not used in basal-bolus insulin therapy.

c. This choice is incorrect. Sliding-scale insulin therapy involves adjusting insulin doses based on current blood glucose levels, rather than providing consistent basal and mealtime coverage.

d. This choice is incorrect. Insulin glargine therapy provides long-acting basal insulin coverage but does not involve bolus doses before meals.