Bilirubin, direct
Stomach and gut healthDirect bilirubin forms when the liver processes bilirubin so it can be excreted.
Why this matters
Elevated direct bilirubin specifically indicates problems with bile flow or excretion, such as bile duct obstruction (gallstones, tumors), intrahepatic cholestasis, or hepatocellular injury (hepatitis, cirrhosis). Unlike indirect bilirubin, high direct bilirubin can appear in urine, causing dark coloration. Early detection enables intervention for potentially reversible causes like medication effects or gallstones before permanent liver damage occurs.
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