PCBs get into wild salmon from the other fish they eat and into farmed salmon from their feed (which contains many of these same fish). The FDA has set the safe upper limit for PCBs at 2000 parts per billion (ppb). Farmed salmon averages 27 ppb, well below that limit.
To maximize the shelf life of cooked chicken for safety and quality, refrigerate the chicken in shallow airtight containers or wrap tightly with heavy-duty aluminum foil or plastic wrap. Properly stored, cooked chicken will last for 3 to 4 days in the refrigerator. To further extend the shelf life of cooked chicken, freeze it; freeze in covered airtight containers or heavy-duty freezer bags, or wrap tightly with heavy-duty aluminum foil or freezer wrap.
Let us assume that the chicken has been defrosted and is in the fridge. In this case it should be cooked withing 48 hours or 2 days maximum. If the fresh chicken kept in the fridge then that too should be used or say cooked within 48 hours or 2 days. Fresh or defrosted chicken can last for 2 days. Another aspect should be noted: