A lab test has failed to find any tuna DNA in Subway tuna sandwiches. The test, commissioned by the New York Times, used “more than 60 inches worth of Subway tuna sandwiches” purchased from three Los Angeles stores that were frozen and sent to a specialised fish-testing lab. Researchers were unable to pinpoint a fish species. A lab spokesperson told the New York Times there were two possible conclusions. “One, it’s so heavily processed that whatever we could pull out, we couldn’t make an identification,” they said. “Or we got some and there’s just nothing there that’s tuna.”
The latest test was commissioned after a class action lawsuit filed in the US earlier this year accused the fast food restaurant of false advertising over the contents of its tuna subs. The suit claimed Subway uses an “entirely non-tuna based mixture that Defendants blended to resemble tuna and imitate its texture”. Subway denied the allegations telling NBC News it “delivers 100% cooked tuna to its restaurants, which is mixed with mayonnaise and used in freshly made sandwiches, wraps”.