Is it possible to still be gluten-sensitive after testing negative? Just had the test last week, and it was.

About histamines in food and foods that release it and their relation to PN. Just read MrsD's thread about this, and does it mean one has to abandon all of the foods mentioned? I eat many foods on those lists, and fish is one of them. Does anybody know whether fish oil capsules would therefore be not such a good thing to take? Am on three a day.