The average serum bilirubin value of a 5-day-old neonate who is a full-term healthy neonate is about 195.28 μmol/L. Jaundice is physiologic if it does not exceed 17.5 mg/dL.
Neonatal jaundice is mainly categorized into physiological and pathological jaundice. Physiological jaundice can subside on its own and does not require special treatment; pathological jaundice is mostly caused by diseases and may jeopardize the health of newborns.
According to the epidemiological survey of normal neonatal jaundice in some regions of China, the average serum bilirubin value of 5-day-old full-term healthy newborns is about 195.28 μmol/L. According to the Bhutani curve, full-term newborns born for 5 days (i.e., 120 h) are considered to be physiological jaundice as long as their serum bilirubin does not exceed 17.5 mg/dL.
If the serum bilirubin exceeds 17.5 mg/dL, or if the bilirubin rises more than 85 μmol/L (5 mg/dl) per day or more than 0.5 mg/dl per hour in a healthy newborn who is 5 days of age and in full-term, the jaundice is pathologic, and if the serum bilirubin is more than 21 mg/dl, then light treatment is needed.
If family members find that jaundice persists for more than 2 weeks, they should consult a doctor in a timely manner to clarify the cause of the disease and actively carry out targeted treatment in order to avoid the occurrence of adverse conditions.
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