n. an excess of the bile pigment bilirubin in the blood. Normally there is under 0.8 mg bilirubin per 100 ml blood (17 μmol/l); when the concentration of bilirubin is above 1–1.5 mg per 100 ml (20–30 μmol/l), visible jaundice occurs. Hyperbilirubinaemia can occur in isolation and in the absence of significant liver disease. Gilbert’s syndrome or red cell haemolysis are usual causes. See also van den Bergh’s test.
Subjects: Medicine and Health — Chemistry.