The bile pigments test is a crucial laboratory evaluation that measures breakdown products of hemoglobin, primarily bilirubin, in the blood or urine. When red blood cells age, they degrade into bilirubin, which travels to the liver for processing before excretion through the digestive tract.
This test is widely used to evaluate liver function, diagnose various forms of jaundice, and investigate hemolytic anemias or biliary obstructions. Abnormal levels—either conjugated or unconjugated—can indicate hepatocellular damage, bile duct blockage, or excessive red blood cell destruction, guiding clinicians toward an accurate diagnosis and treatment plan.