Direct Bilirubin Test
The processed (conjugated) form of bilirubin that the liver has prepared for excretion.
What is Direct Bilirubin?
The processed (conjugated) form of bilirubin that the liver has prepared for excretion.
Direct Bilirubin Reference Range
These are the typical adult reference ranges used by major US labs. Your report will include the specific range used by the lab that processed your sample.
| Population | Range |
|---|---|
| age 18+ | 0.000 – 0.300 mg/dL |
Reference ranges are educational. Always interpret your result with the specific range printed on your lab report and discuss anything outside the range with a clinician.
What your Direct Bilirubin result may mean
Often reflects bile-flow obstruction or liver disease.
Educational only — not a diagnosis. Many factors can influence a single result. Discuss anything that concerns you with a healthcare provider.
Sources
Frequently asked
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