Dr. Francisco Pernas, Otolaryngologist with Baptist Health South Florida, says there are many ways of doing skin testing: they can do a scratch test, in which they scratch you with the antigen that they are testing, and they also can do the subcutaneous injection, using a small needle to inject some of that antigen underneath your skin.

He says there is also the multi-test. “They have this extent that they roll over your skin, and then they can tell based on what you react to.”