Joe, whenever I've taken my water to the lfs, they didn't test everything just nitrates. I doubt very seriously they tested for ammonia and nitrites also. I don't know what your situation is, but I would highly recommend that you buy locally or order a master test kit from aquarium pharmaceuticals. Big Al's has them for $15.99 USD, and I have heard they are $15.00 USD online on PetSmart's website, and that you can print the page where it shows the price, take it into a local PetSmart and they will sell it to you locally for that price. Once you have your kit, please post the ammonia, nitrite and nitrate levels. If your local fish store does test for all these things, please write down the readings and post them for us. Also let us know the size of your tank.
Big Al's