I had my child tested for allergy and was going over the materials in the test that showed to be positive. In her conversion Dr. Cronin said that base test which didn't have any allergen, which was supposed to be negative also showed to be positive as there was some mix up. She spoke as if it's not a big deal, and said “we are such a big hospital and such mix ups are going to happen”. What I'm really concerned is if there was some mix up in materials which was supposed to have nothing, how can I trust the complete test in the same box. What is the possibility others don't have mix up ? This doctor doesn't have any standards about rejecting the dirty test and retesting. I've called the doctor & her office several times about this and she want me to pay for the dirty test & have my child re-tested again(pay for another test). No thanks, I'll go to different doctor or with my child's paediatrician as she has better ethics. I feel, sorry for everyone who went with her treatment for several years giving their kids allergy shots for something they weren't allergic to or sending their pets to shelter when they didn't have allergy for their cats or dogs.