A test done on serum from patients with jaundice to discover whether the excess bilirubin in the blood which causes the jaundice is conjugated or unconjugated. If conjugated, this indicates that haemolysis is causing the jaundice; if unconjugated, disease of the liver or bile duct is the likely diagnosis.
A diagnostic procedure for measuring bilirubin levels in the blood to ascertain, particularly in jaundice cases, if there is a blockage in bile movement.