Lab

Urine Bilirubin

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Urine Bilirubin, Urobilinogen

  • Confirmatory Test
  1. Ictotest
  • Normal
  1. Negative for Bilirubin
  • Positive for Conjugated Bilirubin
  1. Hepatitis
    1. Viral Hepatitis
    2. Toxic Hepatitis
    3. Drug Induced Hepatitis
  2. Biliary tract obstruction
  • Positive for Urobilinogen
  1. Hepatitis
  2. Liver disease
    1. Cirrhosis
    2. Liver Metastases
    3. Liver infarction
  3. Hemolytic Jaundice
  • Gross urine findings if Conjugated Bilirubin present
  1. Dark Urine with yellow foam
  2. Sediment elements may be stained
  • Causes of false positive Bilirubin on Urinalysis
  1. Pyridium
  • Causes of false negative Bilirubin on Urinalysis
  1. Thorazine
  2. Selenium