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. Author manuscript; available in PMC: 2011 May 1.
Published in final edited form as: J Allergy Clin Immunol. 2010 May;125(5):1077–1083.e8. doi: 10.1016/j.jaci.2010.02.038

Table 2.

Discrepancies in detection of specific IgE by PST versus serum IgE

Allergen Percent with detectable serum IgE among all of those with a negative PST Percent with a positive PST among all those with undetectable serum IgE
Milk* 28% 42%
Egg* 12% 56%
Peanut 33% 21%
*

The data show that serum IgE was more sensitive than PST for detecting sensitization to peanut (p = 0.001). Data for milk and egg must be interpreted with caution because enrollment required a positive PST to one or both of these allergens. Calculations are based upon the entire study group; see text for sub-analysis of children with confirmed/convincing milk/egg allergy.