The New York Times did a long piece on a class action lawsuit filed in California by Subway customers against the chain, part of which detailed a quest by Times staff themselves to have a DNA lab run tests on tuna sandwiches they bought and sent to the lab themselves. The answer they got: “‘No amplifiable tuna DNA was present in the sample and so we obtained no amplification products from the DNA,’ the email read. ‘Therefore, we cannot identify the species.’ The spokesman from the lab offered a bit of analysis. ‘There’s two conclusions,’ he said. ‘One, it’s so heavily processed that whatever we could pull out, we couldn’t make an identification. Or we got some and there’s just nothing there that’s tuna.’ (Subway declined to comment on the lab results.)”