Final answer:
A medical assistant should use the intradermal test for the administration of an intradermal skin test. The test involves injecting allergen extracts into the dermis and observing for a wheal-flare reaction.
Step-by-step explanation:
For the administration of an intradermal skin test, a medical assistant should use the intradermal test. The intradermal test involves injecting allergen extracts into the dermis using a small needle. The test is observed for a wheal-flare reaction, which is indicated by a raised, itchy bump (wheal) and redness (flare) at the site of injection.