TABLE 13.

Relationships between biomarkers and iron status

Iron status	Sustainable bone marrow iron	Serum ferritin	Transferrin saturation	Erythrocyte protoporphyrin	Serum transferrin receptor	Hemoglobin
Iron-deficiency anemia	Absent	Low	Low	High	High	Low
Iron-deficient erythropoiesis	Absent	Low	Low	High	High	Normal
Iron depletion	Absent	Low	Normal	Normal	Normal	Normal
Normal iron status	Normal	Normal	Normal	Normal	Normal	Normal
Iron overload	Normal or increased	High	High	Normal	Normal	Normal