A yellow fluid produced in the liver. Elevated bilirubin levels can cause a condition called jaundice in which the eyes and skin appear yellow, urine becomes very dark and feces are light. There are two measures of bilirubin: Total Bilirubin, which measures the amount of bilirubin in the bloodstream and Direct Bilirubin, which measures the amount of bilirubin made in the liver. Normal total bilirubin levels range from .20 mg/dL to 1.50 mg/dL. Normal direct bilirubin levels range from .00 mg/dL to .03 mg/dL