Witness® FeLV-FIV Test Kit allows combined detection of Feline Leukemia Virus (FeLV) antigen and Feline Immunodeficiency Virus (FIV) antibodies in feline whole blood, serum or plasma. The Witness® FeLV-FIV is a simple test based on Rapid Immuno Migration (RIM™) technology. The detection of FIV is based on the presence of antibodies against the transmembrane region of the virus, using a synthetic peptide from the gp40 protein. In both cases, sensitized colloidal gold particles will form a complex with either the p27 antigen (FeLV) or antibodies (FIV) present in the sample. The formed complexes migrate along the strips. The complexes are then captured on a sensitized reaction line where their accumulation causes the formation of a clearly visible pink band. Control bands located at the end of the reading windows ensure that the test was performed correctly. Requires only 50 µ (one drop) of sample. Provides results within 10 minutes. Convenient room temperature storage. 


  • Witness® FeLV-FIV Test is based on Rapid Immuno Migration (RIM™)
  • Room storage means it's ready when you are
  • Needs only 50 microliters of sample
  • Provides results within 10 minutes

Witness FeLV-FIV Test Kit1 (1 test)


    At Cat Mama's Sanctuary, it is our vision is to eliminate euthanasia as a means of population control for cats in our communities through our Spay, Neuter, Feed, Adopt Program. We work with local vets practices, rescue groups, and cat loving volunteers and caregivers to trap, neuter, return and feed the homeless street cats in our communities and neighborhoods. All donations are used for spay, neuter, medical treatments, surgeries, food, supplies, sanctuary care and maintenance. 

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