Bilirubin (TB, DB, IB)

About This Test
Bilirubin is made when red blood cells break down. If the liver can’t process it well, bilirubin builds up and can cause jaundice. Testing helps check liver and bile‑duct function.

Patient Preparation
Fasting not required.

Best Time to Test
Anytime

Tests Included
Bilirubin (TB, DB, IB)

Why is it done
Evaluating fatigue, jaundice, right‑upper abdominal pain, or dark urine.
Assessing alcohol use, fatty liver, hepatitis, or medication effects.
Pre‑treatment baseline before certain drugs.
Monitoring known liver disease.
Often included in routine check‑ups to find issues early.