(Oakland, CA) -- A Northern California judge has ruled that sandwich chain Subway can be sued over claims that it misleads customers when it says its tuna products are "100-percent tuna." The lawsuit originally was filed last year in Oakland by a man who claims Subway's tuna products "partially or wholly lack tuna as an ingredient." The claims are based on testing at a UCLA marine biology laboratory. Subway has said anything in its tuna products that isn't tuna is probably the result of cross-contact as an employee makes a sandwich. The judge ruled on Monday that even it that's the case, the "100-percent tuna" might still be inaccurate.