<prompt> In a child presenting with obstructive Jaundice all are elevated EXCEPT:Gamma glutamyl transpeptidaseAlkaline phosphataseGlutamate dehydrogenase5 Nucleotidase  <response>: Elevations in serum Alkaline phosphatase, 5 nucleotidase, and g-glutamyl transpeptidase levels are sensitive indicators of obstruction or inflammation of the biliary tract. 