Doctor's Assessment Included
Every result includes a professional assessment from a BIG-registered doctor. For treatment decisions, discuss your results with your GP.
Transferrin Saturation: How Well Does Your Body Transport Iron?
Transferrin saturation measures the percentage of iron-transport protein carrying iron, a critical marker for athletic performance. Optimal iron status is essential for oxygen transport to working muscles, endurance capacity, and recovery from training.
What It Measures
This test calculates the percentage of the transport protein that is carrying iron, derived from serum iron and total iron-binding capacity. The value provides a more complete picture of iron status than either measurement on its own.
Why It Matters
This value may be informative when assessing iron balance. Your body needs iron to make red blood cells and to function well. A low saturation may point to a shortage of iron, often before anemia becomes visible. A high value may suggest too much iron in the body. In either case, your healthcare provider can decide whether further investigation is useful.
Transferrin saturation is often viewed alongside other iron markers, such as ferritin, iron and hemoglobin. Together these values may help your healthcare provider build a fuller view of your iron status.
When to Test
Testing may be recommended when iron deficiency or iron overload is suspected, as part of anemia investigation, during monitoring of iron supplementation, or as a screening tool for hereditary hemochromatosis.
Symptoms
Low Levels
High Levels
Lifestyle Tips
For low iron status, include iron-rich foods such as lean red meat, poultry, fish, beans, and dark leafy greens. Vitamin C enhances iron absorption. For high iron status, follow your healthcare provider's guidance regarding dietary modifications and monitoring.