What is the primary function of transferrin in iron metabolism?

A To store iron in the liver
B To transport iron from the gut to the bloodstream
C To bind to free iron in the bloodstream and transport it to target cells ✓
D To regulate hepcidin production

Explanation

Transferrin is a protein that binds to free iron in the bloodstream and transports it to target cells, such as erythroblasts, where it is used for hemoglobin synthesis.

Source

Guyton and Hall Textbook of Medical Physiology
Hematology Hematology: Anemia Hematology: Anemia Medium MEDICAL Confidence: high