High bilirubin levels in newborns may be natural and temporary. However, high bilirubin in adults could be a sign of an underlying health condition, such as jaundice, gallstones, and liver issues.
Bilirubin is a yellow pigment that’s in everyone’s blood and stool. A bilirubin blood test determines the levels of bilirubin in the body. Sometimes the liver can’t process the bilirubin in the body.