Transferrin

Routine annual

also —

What it isTransferrin is the liver-made protein that carries iron through the bloodstream. Direct measurement of transferrin parallels TIBC.

DoesTransports iron from gut and recycled red cells to bone marrow and tissues.

GoodMid-range transferrin signals balanced iron transport.

BadRises in iron deficiency; falls in chronic disease, inflammation, malnutrition, and liver failure.

Standard

200–360 mg/dL.

Optimal

240–320 mg/dL (narrow target)

Modifiers

Same as TIBC.

How to optimize

within Iron