Haptoglobin is a protein made by the liver that binds to free hemoglobin released from destroyed red blood cells. It is used to detect and monitor hemolytic anemia.
Category: Liver Function
Also known as: haptoglobin, hp, hapto
Reference range: 30–200 mg/dL (Source: ABIM)
Standard unit: mg/dL
High values may indicate
High haptoglobin may indicate infection, inflammation, tissue damage, rheumatoid arthritis, or certain cancers.
Low values may indicate
Low haptoglobin may indicate hemolytic anemia, sickle cell disease, transfusion reactions, or chronic liver disease.