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Testing Details

The Direct Bilirubin Test measures levels of conjugated bilirubin in your blood to assess liver and gallbladder function. Direct (or “conjugated”) bilirubin is processed by the liver and excreted through the bile ducts. Elevated levels may indicate bile duct obstruction, liver damage, or impaired bile flow.

Doctors commonly order this test to:

• Diagnose the cause of jaundice
• Evaluate symptoms like dark urine, pale stools, or upper right abdominal pain
• Monitor chronic liver diseases such as hepatitis or cirrhosis
• Detect bile duct blockages caused by gallstones or tumors

This test is often used alongside total and indirect bilirubin tests to help differentiate between liver disease, hemolysis, or bile flow obstruction. It is also useful in newborns with prolonged jaundice to rule out serious conditions like biliary atresia.

The Direct Bilirubin Test offers valuable insights into liver health and supports early diagnosis, better treatment planning, and improved patient outcomes.