Saturday, November 28, 2015

Bilirubin is absent in urine because it is:

ans for the dermatological question is :   Tinea coporis.
The lesion shows plaque with erythematous raised border, characteristic of dermatophyte infection.

Bilirubin is absent in urine because it is:


a. distributed in the body fat
b. conjugated with glucoron
c. not filtered
d. lipophilic


Answer: c & d ( not filtered and lipophilic) 
normal urine does not contain bilirubin because normal blood contains bilirubin in the unconjugated form .
Unconjugated bilirubin is lipid soluble or lipophilic ( water insoluble ) because it is transported in the blood as a complex with albumin ( albumin- bilirubin complex) which is not allowed to filter through the glomerulus .
Metabolism of Bilirubin


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