Your description of the service sounds like 86485--called DHT (Delayed Hypersensitivity Test), where the product is injected in the skin to test for allergy; but--I've never heard that referred to as "antigen."
Maybe run that by the clinical staff and see what kind of response you get. I'm a little lost as to what else they could be doing by inserting the product intradermally. Obviously, then, they aren't screening fluids/specimens for the Candida antigen . . .
Hope this helps some.
Good luck & let us know what you find out.
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