What is the primary function of haptoglobin in the context of blood components?

A It helps in the regulation of iron metabolism
B It binds to free hemoglobin in the blood to prevent kidney damage ✓
C It plays a role in the transport of lipids in the blood
D It is involved in the regulation of blood pH

Explanation

Haptoglobin is a protein that binds to free hemoglobin in the blood, thereby preventing kidney damage and facilitating its removal from the circulation.

Source

Robbins and Cotran Pathologic Basis of Disease
Hematology Hematology: Blood Components Hematology: Blood Components Easy MEDICAL Confidence: high