Allergy Blood Testing- My Thoughts on Why it is Overused
A recent article in the Wall Street Journal ( Is Your Kid Truly Allergic? Tests Add to Food Confusion) recently highlighted the inherent problems with over-calling food allergy in children on the basis of serum IgE testing. I was impressed with the article, and encourage parents of allergic children to read it: http://tinyurl.com/yb5fw5s This is an issue that most allergists run into on a fairly frequent basis- a parent walks into the office with bloodwork ordered by another physician. Tests returned as "positive" for multiple foods, so for the past 3 months, parents have restricted all these foods (generally there's always something that's a pain in the butt to eliminate, like soy or wheat). Now we have a child who is still as symptomatic as ever, and cranky to boot. When I tell the parents that their child in all likelihood is not allergic to all of the eliminated foods, the reactions are a mixture of relief and annoyance: "That's great news, but why di