Bumble Bee Foods

Cento Fine Foods

Hormel Foods

Inventure Foods

Lucerne Foods

Olé Mexican Foods

Orijen pet food

Pacific Foods

Small Planet Foods

Sprout Foods

Wakefern Food

Whole Foods

Yucatan Foods

Associated British Foods

Tyson Foods

Simply Good Foods

Reily Foods Company

Pervine Foods

ACH Food Companies

Everlywell’s Food Sensitivity Tests

These claims to detect intolerances to more than 200 foods are tough to stomach.