<prompt> Cause of neonatal hyperbilirubinemia ?Inefficient ervthropoiesisRBC hemoglobinImmature liver enzymeAll of above  <response>: Ans. is d i.e., All of aboveAvery -textbook of neonatology P.1536ed 6tho 75 of daily billirubin production in Neonats came from normal destruction of circulating RBC.o 25 comes from other factor like.Ineffective erythropoiesisDestruction of immature RBCo Immature UDPGT activity in foetal liver especially preterm baby. 