One of my biggest issues is when a brand chooses to label one item gluten free, but not another. Why is Hunt's diced tomatoes labeled gluten free, but not the paste or sauce? I would have assumed they were all gluten-free, but why label one and not the others? It makes me suspicious.   

Most of these items would be naturally gluten-free, with very little chance of cross contamination, thus they don't typically label them as gluten-free. If wheat is a potential allergen large companies disclose this in the ingredients as "Allergens: wheat." 

What canned tomato sauce is gluten free? I use Hunts diced tomatoes, because they're labeled gluten-free, but none of their other products are labeled. Similar situation with some other brands. How about ricotta? Is that generally safe? Can I just get the store brand? Or do I need to look for a gluten-free label? Thanks for any help.

BadHobit, did you know that 40% of the general population has one or more of the genes that have been associated with the development of celiac disease? But only about 1% of the population actually develops celiac disease. So, the gene test can legitimately be used to rule out celiac disease but not to confirm it.

An entirely different infection caused the sore throat. My doctor said, "When you suddenly switch from a gluten-free diet to gluten, your immune system weakens." I got better with medication. Once I recovered, I experimented with wheat-free but gluten-contaminated foods such as oats. Within a week, watery blisters appeared on my skin again. So I gave up gluten for good. And hello, I gained weight, and I'm not skinny anymore (in fact, I was a person who lost weight by eating pizza and hamburgers!). My skin, stomach, and intestines are happy. I just think they can find out if I have celiac disease—and I'm ninety percent sure about the gluten part—with a diagnostic gene test. However, I prefer not to visit the hospital due to my excellent health. I'll keep you posted when I have that gene test done and receive the results. Thanks a bunch for your help!