Difference between RAST and CAP-RAST???
We saw our pediatric allergist today for the second time today since our now 3.5 year old son was diagnosed with PA at 21 months. Andre was diagnosed with PA by skin prick. I don't have the exact measurement of the wheal, but it was not large at all.
Andre has had absolutely no exposure since then. We took him to the allergist today and asked for a CAP-RAST test so that we could monitor the levels as he gets older. We also wanted him to be tested for tree nuts and sesame seeds, as we are very cautious about cross-contamination with these items, but don't know whether he's actually allergic).
Our allergist told us the CAP-RAST is really just a particular brand of the RAST test, and that not only did he not know of any labs that would run it, but also that our insurance (which is great insurance) would not cover it. He said the RAST was our only option.
We live in Rochester, NY, which has several high quality teaching hospitals. I find it hard to believe there are no labs in our area -- or even out of the area -- where he could have the CAP-RAST done?
I'm just curious what the true difference is between the two tests, and if we'll be lacking vital information because we were only able to have the RAST test done?
We'll have the results in about a week.
Thanks for any insight!
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