Affordable and easy to interpret—it delivers rapid results, can be stored at room temperature, and is 100% sensitive (95% confidence interval: 94.3% - 100%)!
WITNESS® FeLV is a convenient, easy-to-use, in-house test that detects the presence of the feline leukemia virus antigen that is found in high levels in infected cats. Antigen test results are not affected by FeLV vaccination or maternal antibodies. Kittens can be tested at any age.
No Refrigeration WITNESS® FeLV has a 12-month shelf life at room temperature.
No Snapping and No Monitoring RIM™ (Rapid ImmunoMigration) technology allows for a one-step process, as opposed to the ELISA method. So unlike with other in-house tests, you don’t lose time waiting to snap. Plus, you only need one drop of sample (anticoagulated whole blood, serum, or plasma).
Rapid Results With accurate results in 10 minutes or less, you can give your clients the immediate test results they want, giving them peace of mind sooner or getting your patients on a management plan earlier.
Easy to Interpret You get simple-to-understand results, with no complex interpretation needed:
One line on the right = negative
Two lines = positive
Backed by Zoetis Service and Support
Same level of customer support you’re accustomed to receiving
WITNESS® FeLV detects the presence of the FeLV antigen p27 in cats’ blood. The WITNESS® format is referred to as Rapid ImmunoMigration (RIM™). This technology is also sometimes referred to as lateral flow or rapid immunochromatography. WITNESS® tests perform well without refrigeration using an antigen-specific antibody labeled with colloidal gold. After the sample and buffer are added to the sample pad (window 1), any antigens in the sample migrate across a nitrocellulose membrane along with the gold-labeled antibody (conjugate) and form an antigen/antibody gold complex. A second antibody specific to the antigen binds the antigen/antibody gold complex at the test line. In a positive sample, this generates a pink to purple colored reaction line in window 2. Excess colloidal gold migrates across to the control line, where an antibody directed to the gold-labeled antibody binds to it. This causes formation of a pink to purple control line (window 3).
A test result should always be interpreted in the context of all available clinical information and history for the cat being tested.