Found a great study that uncovers the efficacy of two currently-used food allergy testing methods.http://www.innatehealthfoundation.org/5_c.htm. The study (NMJ Original Research: Reproducibility and Reliability of Two Food Allergy Testing Methods) looks at the reliability and consistency of 2 different food allergy testing methods. The two methods used were (1) cell size allergy testing (2) IgG ELISA food allergy testing. The researchers concluded that the IgG food allergy testing method was a more reliable, consistent, and reproducible method for detecting food allergies than that of the cell size allergy testing method, which showed random and inconsistent results.
You can access the article directly at http://www.innatehealthfoundation.org/Articles/NMJ_MAR10_OR.pdf through the Innate Health Foundation published research portal.