Product description

Witness FELV is a convenient, easy way to detect feline leukemia virus antigens.

Active ingredients

Witness FELV kit contents:

• 10 or 25 Pouches, each containing 1 test device.
• 10 or 25 disposables pipettes.
• 1 Buffer dropper bottle (2.2 mL)
• Instructions for use.

Indications for use

Witness FELV is indicated for use when history and/or clinical signs may suggest infection by feline leukemia virus (FeLV) or as a screening test prior to an FeLV vaccination. Cats should also be tested prior to entry into FeLV-negative households or catteries.

Administration and dosage

Witness FELV sample Information:

• A sample size of 0.05 mL should be used. An appropriate sample can be any one of the following:

  • Anticoagulated whole blood (blood that has been collected in an
  • EDTA [purple top] or heparin [green top] tube)
  • Serum
  • Plasma

• Instructions for use:

  • Open the foil pouch and place the test kit on a flat horizontal surface for the duration of the test.
  • Using the supplied pipette*, transfer 1 drop of sample (or 0.05 mL) onto the sample well (window 1), and allow for the sample to be completely absorbed.
  • Add 2 drops of buffer to the sample well (window 1).
  • Wait 10 minutes for sample and buffer to migrate across the test kit into windows 2 and 3.
  • Read test results. When the control line appears in window 3, the test was performed correctly.
  • It is important to use the pipette provided to ensure enough sample is dropped into the well for accurate results.

Prescribing information