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What are the types of iron blood tests?

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  • Serum iron. This measures the amount of iron in your blood.
  • Serum ferritin. This measures how much iron is stored in your body.
  • Total iron-binding capacity (TIBC). This test tells how much transferrin (a protein) is free to carry iron through your blood. If your TIBC level is high, it means more transferrin is free because you have low iron.
  • Unsaturated iron-binding capacity. This measures how much transferrin isn’t attached to iron.
  • Transferrin saturation. This measures the percentage of transferrin that is attached to iron.

From: What is an Iron Blood Test? WebMD Medical Reference

SOURCES:

American Association for Clinical Chemistry: "Iron Tests: The Test."

American Association for Clinical Chemistry: "Iron Tests: The Test Sample."

Mayo Clinic: "Anemia: Overview."

National Heart, Lung, and Blood Institute: "How is Iron-Deficiency Anemia Diagnosed?"

National Institutes of Health, Office of Dietary Supplements: "Iron."

Nemours Foundation: "Blood Test: Ferritin (Iron): What It Is."

Reviewed by Jennifer Robinson on December 19, 2018

SOURCES:

American Association for Clinical Chemistry: "Iron Tests: The Test."

American Association for Clinical Chemistry: "Iron Tests: The Test Sample."

Mayo Clinic: "Anemia: Overview."

National Heart, Lung, and Blood Institute: "How is Iron-Deficiency Anemia Diagnosed?"

National Institutes of Health, Office of Dietary Supplements: "Iron."

Nemours Foundation: "Blood Test: Ferritin (Iron): What It Is."

Reviewed by Jennifer Robinson on December 19, 2018

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