Which serologic test results indicate that ulcerative colitis is more likely than Crohn disease?

Updated: Jul 26, 2019
  • Author: Leyla J Ghazi, MD; Chief Editor: Praveen K Roy, MD, AGAF  more...
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The World Gastroenterology Organization (WGO) indicates that ulcerative colitis is more likely when the test results are positive for pANCA and negative for ASCA antigen [57] ; however, the pANCA test may be positive in Crohn disease, and this may complicate obtaining a diagnosis in otherwise uncomplicated colitis. [58]

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