Question

you suspect your patient has a biliary tract obstruction. which of the following would be a confirmatory sign in your urinalysis?
a) yellow foam in the urine
b) grey colored stools
c) white foam in the urine
d) blood in the urine
e) crystals in the urine

Explanation:

When there is a biliary tract obstruction, conjugated bilirubin cannot enter the intestines (so stools are grey - colored as stercobilin, which gives stools their normal color, is not formed from bilirubin in the intestines). Conjugated bilirubin, which is water - soluble, can be excreted in the urine. When urine with conjugated bilirubin is shaken, it forms yellow foam. White foam in urine may be due to protein (e.g., in kidney problems), blood in urine (hematuria) has various causes like urinary tract infections, kidney stones, etc., and crystals in urine can be normal in some concentrations or indicate metabolic or urinary tract conditions. Grey - colored stools are related to the biliary tract but are not a urinalysis finding.

Answer:

a) yellow foam in the urine