I am allergic to shellfish but ok for me to eat tuna.
At the beginning I eliminated all shellfish but not the fish and never had any problems because they have no shells.
Hope it help you
Be sure you’re not allergic to fish also.

i buy it frozen fresh and not from China .

I was trying to find the same thing out for my daughter. She is allergic to shell fish but not tuna. What company did you find that has no cross contamination with tuna please?