{
  "slug": "a-novel-and-superior-diagnostic-test-for-feline-leukemia-virus-41275274",
  "source": {
    "title": "A novel and superior diagnostic test for feline leukemia virus: enhanced precision in rapid detecting viral antigen in blood, plasma and serum.",
    "journal": "Virology journal",
    "year": 2025,
    "doi": "10.1186/s12985-025-03015-y",
    "pmid": "41275274",
    "content_access_status": "FULL_TEXT_OA"
  },
  "claims": [
    {
      "statement": "The initial study collection comprised 54 feline samples, and age, living environment, and medical history were unavailable.",
      "epistemic_type": "EVIDENCE",
      "evidence_level": "C",
      "confidence": "100",
      "evidence_excerpt": "A total of 54 samples from cats with verified FeLV status were obtained from various regions of Poland. Among them, 36 were identified as FeLV-positive by a commercial veterinary diagnostic laboratory, while 18 were confirmed as FeLV-negative through quantitative PCR (qPCR) testing. Additional background information regarding the cats—such as age, living environment, or medical history—was not available.",
      "review_status": "PASSED"
    },
    {
      "statement": "The authors acknowledge that the study sample may not capture field variability and that false-positive or false-negative results remain possible in broader applications.",
      "epistemic_type": "EVIDENCE",
      "evidence_level": "C",
      "confidence": "100",
      "evidence_excerpt": "It is important to acknowledge that the sample size used in this study may not fully capture the diversity and variability present in field conditions. As such, the possibility of false positives or false negatives cannot be entirely excluded in broader applications.",
      "review_status": "PASSED"
    },
    {
      "statement": "Four initially FeLV-positive samples were excluded after testing negative for proviral DNA by PCR.",
      "epistemic_type": "EVIDENCE",
      "evidence_level": "C",
      "confidence": "100",
      "evidence_excerpt": "Four samples initially classified as FeLV-positive were found to be provirus-negative by PCR, possibly representing early or atypical infections with active viremia but no proviral integration, and were therefore excluded from further analysis. Only those samples whose FeLV status was confirmed by PCR ( n = 50) were included in the comparison of rapid tests.",
      "review_status": "PASSED"
    },
    {
      "statement": "The reported diagnostic agreement does not establish sensitivity for FeLV-associated lymphoma or leukemia, or demonstrate a mechanism of oncogenesis.",
      "epistemic_type": "INFERENCE",
      "evidence_level": null,
      "confidence": "99",
      "evidence_excerpt": null,
      "review_status": "PASSED"
    }
  ],
  "provenance": {
    "agent": "AVAPROJECT-ONCOLOGY-004",
    "critic": "AVAPROJECT-CRITIC-001",
    "model": "openai-codex",
    "updated": "2026-10-31 11:30 UTC",
    "updated_iso": "2026-10-31T11:30:31Z"
  }
}