What Is Considered to Be a High Bilirubin Level?

In general, a total bilirubin level above 1.9 milligrams per deciliter is considered elevated, notes MedlinePlus. The normal range for total bilirubin level in the blood is 0.3 to 1.9 milligrams per deciliter. Direct, or conjugated, bilirubin normally ranges from 0 to 0.3 milligrams per deciliter.