How long can jaundice in premature infants recede?

After jaundice occurs in premature infants, it will generally be returned within 2 weeks to 4 weeks. If it does not disappear for a long time, it is pathological jaundice. At this time, it is necessary to take the child to the hospital pediatrics for bilirubin examination. After diagnosis, it is necessary to use blue light irradiation as prescribed.