It was a blood test you can have done out of pocket if the Dr will not do it. It cost me $300, but it was worth it. She was highly allergic to chocolate and
goats milk , among many other things . Her fevers, that use to run around 101 to 106.7 ,went away in about a month. Now she is 5 years old and living a normal life. My Dr apologized and admitted that it was wrong to rule out any possibilities.