Roommate and I opened a package of lox last Monday and have kept it in the fridge in a ziplocked bag ever since. Still good to eat or should we scrap it?
With Lox, you always want to use the smell test. Does it still smell good. I would say after one week it is certain to still be good.
But in general, smoked fish is salted and smoked, aka, designed to last!
We freeze lox and it seems to last forever. Maybe slight decrease in quality--make sure it's well wrapped.
I do this too, but I've learned to check whether it's been frozen before. Those of us outside NY often get packaged that has already been frozen either before getting to or at the store.
I agree with the smell test (also, if it develops a filmy coating -just, ew.) But I have to say I'm not too familiar with the concept of smoked salmon leftover for more than a day or so...it's one of those things for me where resistance is futile.
I can't speak for your lox in particular, but I have eaten week-old lox and it's been fine! I always do the smell test beforehand, though.