One tuna fish sandwich, please — but hold the tuna.A lab test set up by the New York Times reportedly detected no tuna DNA in 60 inches of tuna sandwiches that were examined. The experiment included sandwiches from three Subway shops in Los Angeles. Of course, there’s a catch.According to a spokesperson from the unidentified lab that conducted the testing, there are two possibilities for their inability to detect tuna. The first explanation is that Subway’s tuna is so heavily processed that if there is tuna in their sandwiches, it couldn’t be clearly identified. The second possibility is that there’s...