When you say a short battery of tests what did they do exactly? I went through this with my son- snot everywhere!! On the walls-furniture- poor kid always blowing his nose. the other kids calling him-tissue man. the ENT gave me a prescription for EMLA cream. It numbs the skin. I put it on the backs of his arms befor he was tested and he didnt fell the needles at all. They injected about 30 littles bubblesunder his skin and ina few minutes we knew what he was allergic to. In some cases it got red and in some it swelled a little. I hope this helps!