Above: The Fox Hole Radio built with a WWII-era âbluedâ razor blade and pencil lead for the detector. Note the bamboo coil form and the paper clip attached to a cork used to slide along the coil turns to tune the radio. The orange wire goes to the antenna, the black wire to ground.
FIV is diagnosed with a âsnapâ test, usually in combination with the Felv test. A positive FIV test almost always indicates active infection. The exception is young kittens born to an FIV positive queen. Young kittens possess antibodies to FIV from mom, but may not actually have the disease. So, if you have an FIV positive kitten, before panicking, have the kitten retested at 6 months of age.
1 The standard screening test for FIV is called an ELISA (Enzyme-Linked Immunosorbent Assay). 2  All ELISAs use variations of a labeled antigen format in which the test serum is reacted with FIV antigens. 3  FIV-specific antibodies bind to the antigens to form an antigen-antibody-antigen sandwich. Testing for Antibodies. 2  The commonly used clinical FIV tests are for antibodies to the virus, not for viral antigen (âantigenâ being some component of the virus capable of initiating an antibody response).