Which lab tests may be helpful in the diagnosis of appendicitis in patients with an atypical presentation?

Updated: Jul 23, 2018
  • Author: Sandy Craig, MD; Chief Editor: Barry E Brenner, MD, PhD, FACEP  more...
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The following laboratory tests do not have findings specific for appendicitis, but they may be helpful to confirm diagnosis in patients with an atypical presentation:

  • CBC

  • C-reactive protein (CRP)

  • Liver and pancreatic function tests

  • Urinalysis (for differentiating appendicitis from urinary tract conditions)

  • Urinary beta-hCG (for differentiating appendicitis from early ectopic pregnancy in women of childbearing age)

  • Urinary 5-hydroxyindoleacetic acid (5-HIAA)

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