• Fasting for 6–8 hours may be advised, especially if the test is part of a liver function panel.
• Avoid alcohol consumption for at least 24 hours prior to testing, as alcohol can affect bilirubin levels.
• Inform the laboratory team about all medications or supplements you are taking, particularly antibiotics, antimalarials, or liver-related drugs.
• Stay well hydrated before sample collection unless advised otherwise by your doctor.
• Carry your doctor’s prescription and a valid ID proof as required.
• If repeat testing is needed, follow the same preparation instructions each time for consistent comparison.

This test measures three components of bilirubin in the blood:

• Total Bilirubin: The overall amount of bilirubin in the bloodstream.
• Direct (Conjugated) Bilirubin: Bilirubin that has been processed by the liver and is ready for excretion into bile.
• Indirect (Unconjugated) Bilirubin: Bilirubin that has not yet been processed by the liver.

Doctors commonly recommend this test to:

• Evaluate jaundice and yellow discoloration of skin or eyes
• Assess liver function and bile flow
• Detect bile duct obstruction or liver inflammation
• Investigate hemolytic anemia
• Monitor liver diseases such as hepatitis or cirrhosis
• Evaluate newborn and adult jaundice

The test involves collecting a small blood sample from a vein in the arm. The procedure is quick, safe, and causes minimal discomfort. Results are interpreted by comparing the proportion of direct and indirect bilirubin, which helps identify the underlying cause of abnormal levels.

For example, elevated indirect bilirubin may suggest increased red blood cell breakdown or inherited conditions, while elevated direct bilirubin often points to liver disease or bile duct obstruction. Evaluating all three values together provides a more complete and accurate diagnosis.