Okay, I took a while to get this answer to you, but here is what my research found. Different nutrition testers get different results...which sucks in terms of accuracy. However, the brand names and restaurants pay a lot of money to have their foods evaluated, usually by outside sources which are then cross verified by independant agencies. They are required by law to be as accurate as possible in gauging nutritional AND caloric, fat, and cholesterol, sodium and other values to avoid lawsuits from misleading the public. The best answer I can give you is to trust the information on the labels as well as the websites for food products and restaurant meals. Hope this helps!
I was looking for nutritional info from Taco Cabana and found on their website the calorie for a certain food was way different from the calorie info listed on other calorie chart web sites but also listed for Taco Cabana for the same food item. Which would be more accurate????
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