Chicken breast???

Best thing you can do is try to remember the specific name brand you buy. The local grocery store I shop at sells Sanderson Farms and Perdue. Try checking based on name brand.

They all add different amounts of water/sodium. They all trim the fat off differently. Some leave the tenderloin on some dont some is trimmed in store and typically not as well done...the potential for variance is actually completely legitimate. Try searching for your brand or asking your butcher next time you're there...I've worked in a meat room. They should have at least a ball park available for you...