<prompt> Which is NOT seen in urine in obstructive jaundice?UrobilinogenDirect bilirubinBoth of the aboveNone of the above  <response>: Normally, there are mere traces of urobilinogen in the urine. In complete obstruction of the bile duct, no urobilinogen is found in the urine, since bilirubin has no access to the intestine, where it can be conveed to urobilinogen. In this case, the presence of bilirubin conjugated in the urine without urobilinogen suggests obstructive jaundice, either intrahepatic or posthepatic. Ref: Murray R.K. 2011. Chapter 31. Porphyrins Bile Pigments. In D.A. Bender, K.M. Botham, P.A. Weil, P.J. Kennelly, R.K. Murray, V.W. Rodwell Eds, Harpers Illustrated Biochemistry, 29e. 