What is the normal bilirubin level for neonatal jaundice?
Jul 11, 2025
Source: Cainiu Health
Dr. Zhou Xiaofeng
Introduction
The normal values for neonatal jaundice typically refer to the level of bilirubin in the serum. These values may vary depending on the newborn's gestational age, postnatal age, and overall health condition. To avoid health risks, it is recommended to monitor neonatal jaundice levels under the guidance of a qualified physician, using either blood tests or transcutaneous bilirubinometers. Additionally, ensure adequate feeding to promote bowel movements in the newborn.
Generally, the normal value for neonatal jaundice refers to the level of bilirubin in the serum, which varies depending on the infant's gestational age, chronological age, and overall health status. Detailed analysis is as follows:
The normal range for jaundice in full-term newborns varies according to different time points after birth. Within 24 hours after birth, the bilirubin level should not exceed 5–7 mg/dL; within 3 days after birth, it should not exceed 12 mg/dL; and within 7 days after birth, the jaundice value should not exceed 15 mg/dL. If the bilirubin level remains within these ranges, it is considered a normal physiological process. It can be managed through adequate feeding and spontaneous resolution. However, if bilirubin levels in a full-term newborn exceed these thresholds at the corresponding time points, it may indicate pathological jaundice. The jaundice is limited to the face and trunk, and the infant is alert, feeds normally, and gains weight steadily.
To avoid health risks, it is recommended to monitor neonatal bilirubin levels under the guidance of a qualified physician, using either blood tests or a transcutaneous bilirubinometer. Additionally, ensure adequate feeding to promote bowel movements and reduce bilirubin accumulation.
