For diagnosing EHV, which method is NOT typically used?

To diagnose equine herpesvirus (EHV), various methods are typically employed to detect the presence of the virus or the immune response to it. Among the methods mentioned, urinalysis is not a standard technique used for diagnosing EHV.

PCR viral isolation is a valuable method as it allows for the direct identification of the virus by detecting its genetic material in samples, providing a rapid and accurate diagnosis. Serum neutralization tests are used to assess the immune response to EHV, confirming exposure or infection based on the presence of antibodies in the horse's serum. Post mortem immunohistochemistry (IHC) of central nervous system (CNS) tissues is also relevant for diagnosing EHV, particularly in cases where neurological disease is suspected, as it helps to visualize the presence of the virus in the affected tissues.

In contrast, urinalysis primarily focuses on the examination of urine for various parameters related to kidney and urinary tract health. As such, it does not provide relevant information specific to EHV, making it an unlikely method for effective diagnosis of this viral infection.