Which laboratory test is commonly used to monitor long-term glycemic control in individuals with diabetes mellitus by measuring average blood glucose levels over the past 2 to 3 months?
Fasting blood glucose test.
Oral glucose tolerance test (OGTT).
Hemoglobin A1c (HbA1c) test.
C-peptide test.
The Correct Answer is C
The Hemoglobin A1c (HbA1c) test measures the percentage of hemoglobin that is glycated, reflecting average blood glucose levels over the past 2 to 3 months. It is a valuable tool for assessing long-term glycemic control.
Incorrect choices:
a. This choice is incorrect. The fasting blood glucose test measures blood glucose levels after an overnight fast and provides a snapshot of current glucose levels, rather than long-term control.
b. This choice is incorrect. The oral glucose tolerance test (OGTT) measures how the body responds to a glucose load and is used to diagnose diabetes and impaired glucose tolerance, rather than monitor long-term control.
d. This choice is incorrect. The C-peptide test is used to assess insulin production by measuring the level of C-peptide, a byproduct of insulin production.
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Related Questions
Correct Answer is B
Explanation
The "three P's" of diabetes mellitus refer to polyuria (excessive urination), polydipsia (excessive thirst), and polyphagia (excessive hunger) due to the body's inability to effectively use glucose for energy.
Incorrect choices:
a. This choice is incorrect. Increased appetite, weight gain, and bloating are not characteristic of diabetes mellitus; rather, diabetes is associated with weight loss despite increased appetite (polyphagia).
c. This choice is incorrect. Pallor, palpitations, and pain are not specific manifestations of diabetes mellitus.
d. This choice is incorrect. Panic attacks, paranoia, and paresthesia are not typical clinical manifestations of diabetes mellitus.
Correct Answer is A
Explanation
Metformin is a commonly used oral antidiabetic medication that improves insulin sensitivity in peripheral tissues, reduces hepatic glucose production, and enhances glucose uptake by cells.
Incorrect choices:
b. This choice is incorrect. Glipizide is a sulfonylurea medication that stimulates insulin secretion from the pancreas, rather than increasing insulin sensitivity.
c. This choice is incorrect. Insulin lispro is a rapid-acting insulin analog used for mealtime coverage in insulin therapy.
d. This choice is incorrect. Exenatide is a glucagon-like peptide-1 (GLP-1) receptor agonist that stimulates insulin secretion and suppresses glucagon release, but it does not primarily target insulin sensitivity.
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