In addition, manufacturers must use use the common or usual name of the allergen.

For example, egg must be called “egg” on food labels instead of ovalbumin.

Therefore, these do not need to be labeled.

Nut allergy warning on packaging

Peter Dazeley / Photographer’s Choice / Getty Images

Manufacturers are not required to print allergy warnings on raw chicken.

If you areallergic to crustacean shellfish, it’s possible you may have a sensitivity to mollusks as well.

What Does May Contain Mean?

These warnings are voluntary, so some manufacturers may not include this information.

The only way to know if there is a chance ofcross-contaminationis to call the manufacturer of the product.

Ingredients and processing can change at any time.

U.S. Food and Drug Administration.