I think what you are asking about is referred to as a food challenge: Dose. Wait. repeat. His Allergist sets the plan. We started with really baked eggs (muffin

I think what you are asking about is referred to as a food challenge: Dose. Wait. repeat. His Allergist sets the plan. We started with really baked eggs (muffins, cakes, etc). At first it was in the Dr office with controlled dosage and interval. He passed so we went home and continued to feed him muffins and such. When that went fine for a few weeks we started with lesser cooked eggs (pancakes & waffles). We will not be trying just cooked eggs (fried, etc) for a bit. And that will be back at the Allergist's office. Prior to eggs, we did the same challenge with soy in the Dr office. Tiny sip. Wait 15 minutes. Slightly larger sip. Wait 15 minutes. 1/4 oz. Wait. Half oz. Wait. Dose. Wait. Dose. Wait. After the final dose we had to wait another 90 minutes before we could leave. At about 85 minutes he just started vomiting. All. Over. It was horrific. I'm glad we were in an examine room and not at home. The nurses handled everything perfectly.