<; p >; This Invention Bertalanffy relates to kits and all M & eacute; test for the sensitivity to food referred to based on the selection of Bertalanffy Rational basis of food preparations with P value established discriminatory.Particularly Preferred kits include those with a mere & N 'm & amp; a minimum of food preparations that have discriminatory value P average of 0.07 & le; P value as determined by their Gross average of Discriminatory or P & le; 0.10 as determined by the value P adjusted for multiplicity of FDR.Aspects covered in the compositions, and additionally, for all M & eacute; Food sensitivity also & eacute; n are stratified by G & eacute; Nero to improve Brand M & aacute; n; S Predictive value. <; / p >;COMPOSICIONES, DISPOSITIVOS Y MÉTODO PARA PRUEBAS DE SENSIBILIDAD DE SÍNDROME DEL INTESTINO IRRITABLE