Nabisco Triscuits

(apologies if this is a repeat; i'm cleaning up my desk.)
Emailed Nabisco after a serious reaction in December, thinking /maybe/ it had something to do with one of their triscuits varieties that uses soybean oil.
Darryl Pope called back a few days later. He had spoken with the mfg plant. They are free of major allergens (including nuts, peanuts, eggs, milk) except for soy, which is refined (oil). They track customer complaints in a database and have had none in past 12 months. Reassuring, but still doesn't help us identify what it could have been.