Fructosamine is indicated in which conditions?

• A. Hemolytic anemia and Hb variants (HbA1c not useful)
• B. Hypoalbuminemia
• C. In all patients with diabetes
• D. In patients with high protein intake

Answer: (A)

Fructosamine reflects the average blood glucose over the past 2–3 weeks by measuring glycated serum proteins, mainly albumin, and it does not depend on red blood cell turnover. This makes it particularly useful when HbA1c measurements are unreliable.

In conditions like hemolytic anemia or the presence of hemoglobin variants, the usual HbA1c test can be misleading because RBC lifespan is altered or the Hb variant interferes with the assay. Fructosamine remains informative here because it bypasses these RBC-related issues, providing a usable measure of glycemic control.

Hypoalbuminemia, on the other hand, affects the amount of protein available to be glycated, which can skew fructosamine results, so it isn’t an ideal or intrinsic indication for using this test. Using fructosamine in all patients with diabetes isn’t appropriate since HbA1c is generally preferred when reliable, and high protein intake doesn’t establish a specific need for fructosamine either.