In conditions that shorten red blood cell lifespan, HbA1c values tend to be:

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Prepare for the BOC Clinical Chemistry Test with our comprehensive quiz. Study with multiple choice questions and detailed explanations. Enhance your readiness and confidence for the exam!

Multiple Choice

In conditions that shorten red blood cell lifespan, HbA1c values tend to be:

Explanation:
HbA1c reflects the average blood glucose over the life of a circulating red blood cell, because glucose glycates hemoglobin at a rate proportional to both the glucose level and the time the hemoglobin spends in the bloodstream. When red blood cells are cleared more quickly than normal, they have less time to accumulate glycation. As a result, the overall HbA1c percentage ends up lower than expected for the same average glucose. This is why HbA1c values tend to decrease in conditions with shortened RBC lifespan. Clinically, this can make HbA1c underestimate true glycemic control, and alternative markers or methods may be used in such cases.

HbA1c reflects the average blood glucose over the life of a circulating red blood cell, because glucose glycates hemoglobin at a rate proportional to both the glucose level and the time the hemoglobin spends in the bloodstream. When red blood cells are cleared more quickly than normal, they have less time to accumulate glycation. As a result, the overall HbA1c percentage ends up lower than expected for the same average glucose. This is why HbA1c values tend to decrease in conditions with shortened RBC lifespan. Clinically, this can make HbA1c underestimate true glycemic control, and alternative markers or methods may be used in such cases.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy