Question about RAST Results

Posted on: Fri, 08/03/2007 - 5:30am
anonymous's picture
Joined: 05/28/2009 - 16:42

Hey everyone, I haven't posted in a while but I been lurking. I just received my DS results today and I'm a bit confused. When he was first diagnosed PA at age 4 his Rast results were 76 (Class V), then at age 8 1/2 (2005) I had him retested and his Rast result increased to greater than 100 (Class VI). He had no known exposure since his initial one at age 4. I went to see the allergist last week for his yearly checkup (to check his lung function), he has exercise and allergy induced asthma, and the allergist suggested that we redo the Rast test since it had been 2 1/2 years since his last test and 6 years since his last reaction. The results came in today and they said that it came back and the IGE was 56 (Class V). I'm not really sure what that means. I know he is still very allergic and I don't want to get my hopes up but could it mean since his numbers are going down that he could be outgrowing it? It went down by almost half in 2 1/2 years??? The nurse was the one to give me the results because the Dr. wasn't available.

I will still continue to be as careful and dilligent as I have been for the past 6 years but could there be a glimmer of hope? If anyone has any info on this I would really appreciate it.



Posted on: Tue, 11/13/2007 - 11:21am
SkyMom's picture
Joined: 10/27/2001 - 09:00

Hi JenK, my dd had her last rast about two years ago. We plan on getting her re-tested this year. I would not say it gets better or worse as the numbers don't indicate reaction possibility.
My dd is level six plus on the rast and she is not contact sensitive and she has only had her initial reaction. There are some who are class one or two who are contact sensitive and have had many reactions.

Posted on: Wed, 11/14/2007 - 1:45am
niche's picture
Joined: 02/05/2007 - 09:00

for us my son wasn't diagnosed until he was 3, we retested at 4 and his #'s had sky rocketed. He is class 6 to peanut and 2 to one of the two treenuts they tested. I plan on retesting soon he is 5 and a half as the allergist did not test all tree nuts the first time around and I would like to know for each individual treenut. After that we probably won't retest for a couple of years as at his age things are less likely to change, or change quickly. Unless he was having unexplained reactions or something.

Posted on: Wed, 11/14/2007 - 4:41am
hollya's picture
Joined: 05/10/2007 - 09:00

We found out our son has the peanut allergy at 11 months. I was told after our first appointment that he would not need to be tested again until before he started school at age 5. After a few phone calls I ended up having him tested again before his 2nd birthday, his numbers did drop a little which I was happy about (but still a class 3). I am going to wait until he is 5 before we test again, however from the information that I have got of this wonderful site you can have it done yearly. Good luck!!

Posted on: Wed, 11/14/2007 - 4:45am
MommyOfTwo's picture
Joined: 11/08/2007 - 09:44

My DS had his SPT done at 4 months and at our last appointment the allergist said he will do another SPT done in May which would be 1-year from the first one. He said he will only do a CAP RAST if his SPT wheal is smaller. But we are moving anyways so we will have to find another allergist when we get moved. I think when we are all moved and find a new allergist I'm going to ask for a CAP RAST to be done, just to have a baseline either way, then I would like to test yearly.

Posted on: Fri, 08/03/2007 - 5:49am
chanda4's picture
Joined: 12/14/2006 - 09:00

I think your son is still VERY allergic. It is good to see the numbers come down, but I wouldn't get too excited unless they started dropping even more. If every 2 years they dropped by half, then maybe there would be a gleem of hope for an adolescent outgrow, but highly unlikely.
My son has come from a 51 down to a 21.7 but he is still anaphylaxic. For me, I wouldn't get too excited unless he got down to single digits(personally)...but for now, no hope of an outgrow at this point.
Glad your son is coming down, but still continue to be diligent!!! HUGS
Chanda(mother of 4)
Sidney-8 1/2(beef and chocolate, grasses, molds, weeds, guinea pig, hamster & asthma)
Jake-6 1/2(peanut, all tree nuts, seasame seeds, (avoiding all seeds&coconut)eggs, trees, grasses, weeds, molds, cats, dogs, guinea pig & eczema & asthma)
Carson-4 (milk, tree nuts(avoiding peanuts and seeds)soy, egg, beef and pork, cats, dog, guinea pig, hamster, grass, mold, dust mite and EE)
Savannah-1 1/2 (milk, beef and egg, dog(avoiding peanuts, tree nuts, strawberries, sesame seeds, green beans, peas and corn)

Posted on: Mon, 08/06/2007 - 6:11am
cjsmom's picture
Joined: 06/03/2007 - 09:00

My son was at the allergist for the results of his first RAST testing. His score was a 2 - moderate(on a scale of 1 to 6) I'm not sure that this was the same type of RAST test scale that was used in your case however we were told to retest in 6 months and then if and when his score got to a 0 or maybe a 1 then he would have to do a food challenge at the office. We were told to continue with strict avoidance and carry Epi Jr all of the time. Did your Dr. say anything about a food challenge in the future?
Mom to CJ 15 months Allergic to Peanut, eggs, sesame, chocolate, caesin

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