Transferrin Saturation (TSAT)

Percentage of transferrin bound to iron. Best single marker for hereditary hemochromatosis screening.

Units

Reference (Male)

20 – 50 %

Reference (Female)

15 – 50 %

What it measures

Percentage of transferrin bound to iron. Best single marker for hereditary hemochromatosis screening.

What a high value can mean

Hereditary hemochromatosis, iron overload, hemolytic anemia.

What a low value can mean

Iron deficiency, anemia of chronic disease.

Conditions it helps assess

Iron overload screening

Reading these numbers in context

Reference ranges describe the central 95 % of a healthy reference population — 5 % of perfectly healthy people fall outside any given range by definition. A single mildly abnormal value is rarely meaningful on its own. blood-test.life always interprets values together with related biomarkers before flagging.

Related biomarkers in Iron Studies

Ferritin FER Storage form of iron. The single most useful marker for iron deficiency, with caveats in inflammation. Serum Iron FE Iron circulating bound to transferrin. Diurnal — highest in the morning.