Direct Bilirubin (Conjugated)
Direct (conjugated) bilirubin has been processed by the liver for excretion via bile. Elevated direct bilirubin specifically indicates a problem with bile flow — either intrahepatic (within the liver) or extrahepatic (bile duct obstruction, gallstones, pancreatic head tumor).
Direct bilirubin is distinguished from indirect (unconjugated) bilirubin, which elevates in hemolysis or impaired liver conjugation.
What It Measures
Conjugated bilirubin processed by the liver.
Reference Ranges
| Status | Range (mg/dL) |
|---|---|
| Optimal | 0.0–0.2 mg/dL |
| Normal | 0.0–0.3 mg/dL |
| Borderline | 0.3–0.5 mg/dL |
| Out of Range | > 0.5 mg/dL |
How GATOR Tracks This
Lab Providers
Related Biomarkers
This content is for informational purposes only and does not constitute medical advice. Reference ranges may vary by laboratory and individual factors. Consult a qualified healthcare provider for interpretation of your results and treatment decisions.
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