They may not do testing that day depending on certain medications you have in your system, like anti-histamines which influences the tests, may have to reschedule. When they do testing, depending on the size of the panel they do, there is a small panel done which is done on the inside of the forearm with tiny pin pricks, barely feel them if at all and you wait for responses. The larger panel is done on your back, same type of prick and wait for the response. I can't remember how long the wait is, but not long, minutes.

If you take antihistamines for your allergies, the doctor office at that time recommended that I take along an antihistamine to take afterward in case there was a reaction to minimize any itching the rest of the day for mild to moderate reactions. Anaphylactic reactions, they'll have you covered of course. Call the doctor office to confirm if this is still the case.

Your childhood testing shouldn't affect testing now; the tests have changed since then but I would let them know of the prior testing and of any positive results.

Best wishes, -Fresia