There may be something scary about Subway tuna, according to a federal judge in the U.S. District Court for Northern California, who has allowed a lawsuit against the sandwich chain to continue.
According to a complaint filed in November 2021 by several consumers in the San Francisco Bay Area, Subway’s labeling and marketing materials tricked them “into buying first-class dishes based on the representation that the tuna products contained only tuna and no other fish species, animal products or miscellaneous ingredients.”
The plaintiffs claimed that 19 of the 20 samples collected from the California subway contained “no detectable DNA sequences for tuna at all,”; based on DNA bar coding tests, according to The Washington Post. They also claimed that all 20 samples contained “detectable sequences of chicken DNA”, while 11 samples contained pork DNA and seven included bovine DNA.
Subway claimed in court documents that all evidence of other animal DNA probably comes from the eggs in mayo or from cross-contact of ingredients, because its workers use the same gloves, utensils and cutting boards to prepare different sandwiches, according to Posten.