However , this is only a factor when soy proteins reach the blood without being digested , in sufficient quantities to reach a threshold to provoke actual symptoms .
An allergy test that is positive demonstrates that the immune system has formed IgE antibodies to soy proteins .
This is only a factor when soy proteins reach the blood without being digested , in sufficient quantities to reach a threshold to provoke actual symptoms .
An allergy test that is positive demonstrates that the immune system has formed IgE antibodies to soy proteins .