Bilirubin (Indirect)
What does Bilirubin (Indirect) measure?
This test measures indirect (unconjugated) bilirubin, a yellow pigment produced when red blood cells break down. It is often assessed along with total and direct bilirubin to help evaluate how bilirubin is being processed by the body. A healthcare professional may order it when investigating jaundice, anemia related to increased red blood cell breakdown, liver-related concerns, or certain inherited bilirubin-processing conditions. Results are interpreted alongside symptoms and other laboratory findings.
This overview is educational. Use the recorded preparation, sample and lab-partner details below for collection guidance, and confirm any missing information before collection.
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- Sample for analysis
- Serum (1 mL)
- Report time
- 11:00/18:00
Preparation and specimen requirements can vary by test and laboratory. Follow the instructions shown for your selected partner and any advice from your healthcare professional.