Although it may be suspected on clinical grounds, the presence of EHV can only be definitively diagnosed by a suitably equipped and experienced laboratory. Where disease is suspected, the attending veterinary surgeon should take the following samples and submit them to an appropriate laboratory:
Veterinary surgeons should submit blood samples preserved with heparin or EDTA in addition to clotted (serum) samples.
For members of the Thoroughbred Breeders’ Association in Great Britain, a contribution may be available towards laboratory costs for aborted fetuses or foals that die within 14 days of birth. Further details are available from the Thoroughbred Breeders' Association.