Sentence Examples


  • If the feline leukemia test is positive, your veterinarian will likely follow up with more definitive testing using a immunofluorescence assay (IFA).
  • The IFA test looks specifically at the white blood cells for the antigen and therefore gives a more definitive diagnosis of the disease.
  • Should the ELISA and IFA test give conflicting results, the PCR test offers a way for your veterinarian to diagnose feline leukemia.
  • Indirect immunofluorescent antibody assay (or IFA) test can only find the secondary stage of the virus.
  • The IFA test is definitive, but it's not as sensitive as the ELISA test.