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. Red blood ...

Dark or tea-coloured urine has many different causes, including dehydration, medications, urinary tract infections, and hemolytic disorders. Levels of haptoglobin — a glycoprotein, synthesized in the ...