3.7 Chemical Examination of Urine (Bilirubin) Flashcards
Bilirubinuria may cause by:
- Hepatitis
- cirrhosis
- other liver disorders
- biliary obstruction
T or F
T
Bilirubin is evaluated in conjunction with urobilinogen to establish a differential diagnosis of jaundice
T or F
T
Test for Bilirubin:
Gmelin’s test or Fouchet’s
a. Foam shake test
b. Oxidation test
c. Diazotization test
b
Test for Bilirubin:
Ictotest
a. Foam shake test
b. Oxidation test
c. Diazotization test
c
Involves shaking the specimen and watching out for the formation of persistent yellow foam
Foam shake test
What is the positive result for Foam shake test?
Yellow foam
Rule out intake of phenazopyridine or Pyridium compound because they too can produce yellow foam when specimen is shaken
T or F
T
Test for Bilirubin:
Not specific for bilirubin but for bile pigments
a. Foam shake test
b. Oxidation test
c. Diazotization test
b
Test for Bilirubin:
Principle: Acidic oxidation of bile pigments producing a rainbow or ray of colors at the contact point
a. Foam shake test
b. Oxidation test
c. Diazotization test
b
Test for Bilirubin:
Tablet test that is the counter part of Clinitest for glucose and acid test for ketones
a. Foam shake test
b. Oxidation test
c. Diazotization test
c
Test for Bilirubin:
Confirmatory test for urine bilirubin
a. Foam shake test
b. Oxidation test
c. Diazotization test
c
Test for Bilirubin:
Positive result: Blue to purple
a. Foam shake test
b. Oxidation test
c. Diazotization test
c
Test for Bilirubin:
Addition of Nitric acid to a specimen containing bile pigment at the point of contact, you will see a ray of colors
a. Foam shake test
b. Oxidation test
c. Diazotization test
b
Test for Bilirubin:
More sensitive than the reagent strip test
a. Foam shake test
b. Oxidation test
c. Diazotization test
c
Hemolytic jaundice does not present with Bilirubinuria
T or F
T
