Should in-practice Felv and FIV test results be checked?
In the interest of best practice, any unexpected positive or negative Felv test should be confirmed with a Gold standard test. In practical terms, that probably means an Immunofluorescence test (IFT). As far as FIV is concerned, there is probably a strong case for not doing any in-house testing unless the test confirms your diagnosis in a sick cat. Samples should be referred to a laboratory that offers the FIV IFT. It has been standard practice at NWL to check all positive Felv ELISA test results by virus isolation. This is slow and subject to a low percentage of unsuitable samples due to problems with sample quality. As an alternative we have been comparing the IFT with virus isolation and the results are very promising. The only problem is the test requires a heparin or EDTA whole blood sample (or a blood smear). It cannot be done on a serum sample. Special Offer. For a limited period during December we shall be offering a half price check test on your in-house Felv and FIV test resu
