Essential Biochemistry - Plasma Proteins And Immunoglobulins (Section 1 - No. 35)

Which protein prevents the loss of iron in urine?
Haptoglobin
Ceruloplasmin
Transferrin
Hemopexin

Explanation

Hemoglobin binds free hemoglobin to form a complex which is too large to be filtered by the kidney and thus prevents the loss of iron in the urine.

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