This is not a bad thing in isolation, but until GS is specifically diagnosed you may be left to worry whether having high bilirubin is an indication of a more serious. Jan 25, - In children and adults, doctors use it to diagnose and monitor liver and bile duct diseases. These include cirrhosis, hepatitis, and gallstones. High levels of bilirubin can cause a yellowing of your skin and eyes, a condition doctors call jaundice. High bilirubin levels are common in newborns.