Trichinosis laboratory tests

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Danitza Lukac

Overview

A blood test indicating eosinophilia, elevated muscle enzymes and anti trichinella IgG or muscle biopsy can identify trichinosis.

Laboratory Findings

Blood test:

• Eosinophilia:
  • Appears 2 or 5 weeks after infection
  • It is related with severity of myalgia
  • Higher levels among patients with neurological complications
  • A great decrease of eosinophils in patients with complicated trichinosis is considered to be a bad indicator for the disease prognosis
• Elevated muscle enzyme:
  • Creatinine phosphokinase, lactate dehydrogenase, and aldolase
  • Appears 2 or 5 weeks after infection
• Anti trichinella IgG:
  • 12 to 60 days after infection
  • ELISA, indirect fluorescent antibody test (IFA) and Western blot can be used to find anti-Trichinella IgG