FPV beta is a tool for detecting Feline Panleukopenia Virus (FPV). The accuracy of the FPV test version depends on its design and the detection method used. Generally speaking, the FPV test version determines whether the cat has feline distemper by detecting the presence of FPV virus in the body.

According to the search results, the FPV test version can be used as a preliminary screening tool for cat plague in some cases. However, its accuracy may be affected by many factors, such as the quality of the sample, the sensitivity and specificity of the test method, etc. In practical applications, the FPV beta version may not be able to detect all cases of feline plague, especially those in the incubation period.