Do I still have a Peanut Allergy?

So I've thought I have a peanut allergy for about 15 years now, but now I'm not so sure. I've found that I can eat stuff that has peanut powder or other tree nut powder/oil as the last ingredient on the list. I've also tried a type of tea that I later found out had nuts in it (it was a small, sample type thing). So, am I not allergic to nuts anymore, or is it that all that stuff just has such a small amount that it doesn't cause the reaction?