SEROLOGIC TESTS (III)IFA

HGE

• Predominant in-vitro cell culture line

  • HL-60 human promyelocyte

• Cutoff: ɭ:80 IgG/IgM

• Diagnostic

  • Single titer (ɭ:64) + clinical signs
  • IFA > 4x titer change between acute phase and convalescent phase

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