Physiologic Jaundice Onset of jaundice: 2-3 days of age I The time of peak level: 4-6 days of age I The resolving time Full term: 2 weeks of age Preterm:3-4 weeks of age 1 Level of total serum bilirubin: <12mg/dL 1 Level of conjugated bilirubin: <1.5mg/dLPhysiologic Jaundice Onset of jaundice: 2-3 days of age The time of peak level: 4-6 days of age The resolving time: Full term: 2 weeks of age Preterm: 3-4 weeks of age Level of total serum bilirubin: <12mg/dL Level of conjugated bilirubin: <1.5mg/dL