[anonymously]

http://www.greerlabs.com/index.php/veterinary_allergy/veterinary_dermatologist/

This is an example of a pharmacy that prepares “Allergenic Extract” the solution used for allergen specific immunotherapy per veterinary dermatologist’s orders.
The veterinary dermatologist that performs the IDT (intradermal testing) determines the solution based on the results of testing, how often to be given, etc.
That is why the expertise of the veterinarian is so crucial to successful results.

“At GREER®, we are committed to providing quality products and services to veterinary dermatologists. You can be confident in the extensive line of GREER® Extracts™ − trusted by over 160 dermatology practices and 27 veterinary colleges in the United States. GREER offers products to support all aspects of your allergy practice”