When transferrin saturation is elevated, which test helps interpret possible iron overload?

When transferrin saturation is elevated, which test helps interpret possible iron overload?

• A. Ferritin level
• B. Hematocrit
• C. Calcium
• D. Vitamin D

Answer: (A)

Transferrin saturation being high points you toward iron overload, so ferritin level is the test that best helps interpret the situation. Ferritin reflects the body's stored iron, so a high ferritin alongside high transferrin saturation supports iron overload (such as hemochromatosis or excessive iron intake). If ferritin is not elevated, iron overload is less likely despite the high transferrin saturation. The other options don’t assess iron stores—hematocrit measures red blood cell volume, while calcium and vitamin D relate to bone metabolism, not iron overload.

Transferrin saturation being high points you toward iron overload, so ferritin level is the test that best helps interpret the situation. Ferritin reflects the body's stored iron, so a high ferritin alongside high transferrin saturation supports iron overload (such as hemochromatosis or excessive iron intake). If ferritin is not elevated, iron overload is less likely despite the high transferrin saturation. The other options don’t assess iron stores—hematocrit measures red blood cell volume, while calcium and vitamin D relate to bone metabolism, not iron overload.