It’s meaningful to check liver function when a baby has jaundice, including direct bilirubin and indirect bilirubin. Abnormal liver function in neonatal jaundice is a manifestation of infant hepatic syndrome, referring to a group of clinical symptoms that include the onset of jaundice, pathological liver symptoms, and elevated serum alanine aminotransferase levels. If it’s pathological jaundice, hospital treatment is required.