Free and Erythrocyte‐Bound Bilirubin in Neonatal Jaundice

Abstract
Serum free bilirubin and erythrocyte‐bound bilirubin concentrations were estimated in 53 jaundiced neonates with a total serum bilirubin concentration of 227.4 ± 80.4 μmol/1. The serum free bilirubin and erythrocyte‐bound bilirubin concentrations were 8.7 ± 5.6 μmol/1 and 23.8 ± 6.0 μmol/1, respectively. Both, the serum free bilirubin (r=+0.741, pr=+0.754, pr=+0.657, p<0.001). The prediction of serum free bilirubin concentrations from the known erythrocyte‐bound bilirubin value was unreliable.