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CLINICALPATHOLOGY-62
UROBILINOGEN in urine is produced from which metabolic pathway and when is it ABSENT from urine?
A. Kidney cells produce urobilinogen; absent in pregnancy
B. Liver produces urobilinogen directly; absent in renal failure
C. INTESTINAL BACTERIA convert conjugated bilirubin to urobilinogen; absent in COMPLETE BILIARY OBSTRUCTION (no bilirubin reaches intestine)
D. Urobilinogen is produced in the bone marrow; absent in hemolytic conditions
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