The bilirubin level found in the body reflects the balance between production and excretion. Blood test results are advised to always be interpreted using the reference range provided by the laboratory that performed the test. The SI units are μmol/L. Typical ranges for adults are:
* 0–0.3 mg/dl – Direct (conjugated) bilirubin level
* 0.1–1.2 mg/dl – Total serum bilirubin level