Bilirubin, total
Stomach and gut healthA yellow pigment produced when the body breaks down red blood cells.
The liver processes bilirubin for elimination. Elevated total bilirubin can indicate liver dysfunction, bile duct obstruction, or increased red blood cell destruction.
Why this matters
Bilirubin levels provide insight into how well the liver processes waste and how rapidly red blood cells are being broken down. High bilirubin can result from liver problems (hepatitis, cirrhosis), blocked bile ducts (gallstones), or excessive red blood cell destruction. Mild elevations might cause no symptoms, while higher levels lead to yellow skin/eyes, dark urine, pale stools, itching, and fatigue.
How this connects to other biomarkers
- Elevated total Bilirubin with elevated Bilirubin, direct and elevated Gamma-Glutamyl Transferase (GGT) / Alkaline Phosphatase indicates blocked bile flow (gallstones, biliary obstruction, or inflammation of the bile ducts).
- Elevation predominantly of Bilirubin, indirect with low haptoglobin and high Laktatdehydrogenase (LDH) points to red blood cells breaking down (hemolysis); with normal haptoglobin, mild isolated indirect hyperbilirubinemia is most often Gilbert's syndrome (a benign inherited liver variation).
- Markedly elevated total Bilirubin with elevated Aspartat-Aminotransferase (ASAT) / Alanine Aminotransferase (ALAT) suggests acute liver cell injury.
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