In medicine, bilirubinuria is an abnormality in which conjugated

bilirubin Bilirubin (BR) (Latin for "red bile") is a red-orange compound that occurs in the normal catabolic pathway that breaks down heme in vertebrates. This catabolism is a necessary process in the body's clearance of waste products that arise from the ...

is detected in the urine. The term "biliuria" is very similar, but more general. It refers to the presence of any bile pigment in the urine. Conjugated bilirubin is detected in urine at bilirubinemia of approximately 30-34 mmol/L or 2 mg/dL. In this concentration of conjugated bilirubin in the blood appears as yellowness of the mucous membranes and sclera.

Causes

The most common cause of bilirubinuria is hepatocellular disease. More rare causes include inherited disorders, such as Dubin–Johnson syndrome and

Rotor syndrome Rotor syndrome (also known as Rotor type hyperbilirubinemia) is a rare cause of mixed direct (conjugated) and indirect (unconjugated) hyperbilirubinemia, relatively benign, autosomal recessive bilirubin disorder characterized by non-hemolytic j ...

. Although Gilbert's syndrome and Crigler–Najjar syndrome are characterized by increased bilirubin in the serum, the bilirubin in these inherited disorders is not conjugated and thus not excreted in the urine. The increase of stercobilin (urobilin) in the feces and urine is caused by the enhanced intracellular hemolysis of erythrocytes. Formed an unconjugated bilirubin entering the intestine, gives a large number of stercobilinogen (urobilinogen). Last absorbed into the blood and passes into the urine.Bilirubinuria, urobilinogenuria URL
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Causes

Diagnosis

References

External links