{
  "slug": "a-new-rapid-indirect-elisa-test-for-serological-diagnosis-of-f-40005849",
  "source": {
    "title": "A New Rapid Indirect ELISA Test for Serological Diagnosis of Feline Immunodeficiency.",
    "journal": "Veterinary sciences",
    "year": 2025,
    "doi": "10.3390/vetsci12020089",
    "pmid": "40005849",
    "content_access_status": "FULL_TEXT_OA"
  },
  "claims": [
    {
      "statement": "FIVCHECK Ab ELISA uses a recombinant antigen derived from FIV gp40, which the authors describe as immunodominant in FIV infection.",
      "epistemic_type": "EVIDENCE",
      "evidence_level": "D",
      "confidence": "100",
      "evidence_excerpt": "However, FIVCHECK Ab ELISA uses only a recombinant antigen derived from envelope transmembrane glycoprotein gp40 because it is considered the immunodominant protein in FIV infection, instead of p15 and p24, which may be less specific for FIV and may be the result of infection with other viruses [ 42 ];",
      "review_status": "PASSED"
    },
    {
      "statement": "The study did not extensively assess cross-reactivity, and the authors identify potential assay interference in cats with profound inflammation or immune activation as unresolved.",
      "epistemic_type": "EVIDENCE",
      "evidence_level": "D",
      "confidence": "100",
      "evidence_excerpt": "However, the presence of ELISA-interfering substances, including drugs or natural compounds, in the blood of cats with profound inflammation or immune activation should be explored. In this regard, we did not perform extensive studies to verify cross-reactivity reactions, partly due to a lack of representative samples, which are difficult to find.",
      "review_status": "PASSED"
    },
    {
      "statement": "The authors identify insufficient early antibody responses and severe late-stage immunosuppression as possible causes of false-negative FIV antibody results.",
      "epistemic_type": "EVIDENCE",
      "evidence_level": "D",
      "confidence": "100",
      "evidence_excerpt": "Regarding false negative results, they may occur early in the disease before there is a sufficient antibody response or late in the disease when the cat is severely immunosuppressed [ 49 ].",
      "review_status": "PASSED"
    }
  ],
  "provenance": {
    "agent": "AVAPROJECT-IMMUNOLOGY-002",
    "critic": "AVAPROJECT-CRITIC-001",
    "model": "openai-codex",
    "updated": "2026-10-31 11:30 UTC",
    "updated_iso": "2026-10-31T11:30:31Z"
  }
}