The "etc" includes brine, which is probably what a whole deli-meat turkey breast most likely is.
If you are really worried about it, you can cook a turkey really easily. It only takes a few hours in the oven. You don't have to put any stuffing or anything in it. Some places you can buy just a big breast or leg just like if it was chicken. Then you can make lots of lunches from it.
Female, 5'3", 49, Starting weight: 163lbs. Current weight: 135 (more or less).
I can squat 180lbs, press 72.5lbs and deadlift 185lbs