The Total Bilirubin Test measures the overall level of bilirubin in your blood, which includes both direct (conjugated) and indirect (unconjugated) bilirubin. Bilirubin is a yellow pigment produced when the body breaks down old red blood cells.
To check for jaundice (yellowing of skin and eyes)
To evaluate liver function
To help diagnose liver diseases, bile duct obstruction, or hemolytic anemia
To monitor liver health during treatment
Sample Required:
A blood sample
Fasting Required:
Usually 8–12 hours fasting is recommended.
| Unit | Normal Range |
|---|---|
| mg/dL (per deciliter) | 0.3 – 1.2 mg/dL |
| µmol/L (per liter) | 5.1 – 20.5 µmol/L |
High Total Bilirubin may indicate:
Liver diseases (hepatitis, cirrhosis)
Bile duct obstruction
Increased red blood cell breakdown (hemolysis)
Normal levels usually mean the liver is functioning properly





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