How do you test an FVR?
You can test an FVR by Real-time PCR ，or take it to a lab.
Is FIV and FHV the same thing？
FIV and FHV are not the same, they are two different viruses.
Is there a test for FHV in cats？
You can use Feline Herpesvirus FHV Ag Rapid Test Kit. It is convenient and easy to operate.