A bilirubin test measures the amount of bilirubin in your blood. Itâs used to help find the cause of health conditions like jaundice, anemia, and
liver disease.
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For adults over 18, normal
total bilirubin can be up to 1.2 milligrams per deciliter (mg/dl) of blood. For those under 18, the normal level will be will be 1 mg/dl. Normal results for conjugated (direct) bilirubin should be less than 0.3 mg/dl. Men tend to have slightly higher bilirubin levels than women.