What is a normal serum bilirubin value for a newborn needs to be determined based on a combination of gestational age and day of life. After birth, the serum bilirubin value is different at different stages.
According to the epidemiological survey of normal neonatal jaundice in China, the average serum bilirubin value of full-term healthy newborns is 77.29 μmol/L on the first day of birth, 123.29 μmol/L on the second day, 160.91 μmol/L on the third day, 183.82 μmol/L on the fourth day, and 195.28 μmol/L on the fifth day.
However, the mean value is not equal to the standard value. In general, serum bilirubin values of no more than 21mg/dL in term infants after 5 days, 18mg/dL in healthy preterm infants, or 18mg/dL in term newborns with high-risk factors (e.g., hypoxia, asphyxia, infection, etc.), and 15mg/dL in preterm infants with high risk factors, are considered normal.
Therefore, parents should closely observe the serum bilirubin value of their toddlers after birth. If the serum bilirubin value is too high, it is recommended to go to the hospital for blue light irradiation in time.