A haptoglobin test measures the amount of haptoglobin in your blood. Haptoglobin is a protein produced by your liver. It binds with hemoglobin, which is a protein found in red blood cells.

ALTHOUGH haptoglobin is almost always present in normal adult serums, it is demonstrable in only about 10 per cent of cord blood serums by the technique of starch-gel electrophoresis 1.