Nonphysiologic Jaundice 1 Onset of jaundice: before 24 hours of age 1 Any elevation of serum bilirubin that requires phototherapy A rise of serum biliru bin levels of over 5mg/dL/day I Signs of underlying illness ■ Persist jaundiceNonphysiologic Jaundice Onset of jaundice: before 24 hours of age Any elevation of serum bilirubin that requires phototherapy A rise of serum bilirubin levels of over 5mg/dL/day Signs of underlying illness Persist jaundice