It can get confusing when looking at products and they have GF (Gluten Free) or NGA (No Gluten Added) labeling. There are differences between the two. No Gluten Added can still contain gluten even when nothing containing gluten was added to the item.
This means that there is less gluten in the item than around 20 parts per
million. However, this is not regulated. An item can more or less
gluten than that since there are no FDA regulations on this. However, it
means that it is safe for those with celiac or gluten sensitivities to
consume. This is also called "free of gluten"
"without Gluten" or "no gluten". Since this is not
completely regulated yet and the gluten free label is voluntary there are many
gluten free items that are not currently labeled as such. This will
hopefully be changed in the next few years.
No Gluten added
This means that no ingredients containing gluten were purposely added to the
item. However, that does not mean that it has not been cross contaminated
in some form. When something is labeled no gluten added it usually means
it may not contain gluten but it is processed or made in a place that does use
gluten containing ingredients. This type of food is not recommended for
those with a Gluten sensitivity/intolerance or celiac patients.
Domino's pizza came out with a "gluten free pizza" however, it is
not safe to be eaten by those with celiacs. The reason for this is that
it is a No gluten added product. While everything in the pizza has no
gluten it was made at the same stations that use gluten containing products
such as wheat flour. I have tried and gotten sick off of the Domino's
pizza personally and I do not recommend it to anyone who has any type of gluten
However, I will eat at Uno's Chicago grill. They have a "gluten
free" pizza that really is. There is a gluten free section to the
kitchen and every employee is trained in how to handle gluten free items.
(Or so the manager said) So the gluten free pizza stays gluten
free. This however can still be cross contaminated if someone is not sure
what they are doing.