Cap-Rast went up, but reaction is down?

Posted on: Fri, 03/16/2007 - 12:33pm
nutty-mom's picture
Joined: 02/19/2004 - 09:00

Just got my son's Cap-Rast scores back... last year he was .71 for peanuts. This year, at 4 years old, it is 1.5. Needless to say, I am disappointed that it went up.

We had an exposure at Christmas time- another child gave him a Reeses cup shaped liked a Christmas Bell. He took a bite off the top. He didn't like the taste, but otherwise had no reaction (that we could see anyway). At 18 months (his only other exposure) he had hives on his face after eating a peanut.

I feel somewhat confused as to how I should interpret his reaction and cap-rast results. Is it good news that he had no reaction or bad news that his cap-rast went up? Or both? Could the exposure at Christmas, nearly 3 months ago affect his levels today? Does hydration level affect rast scores (he never drinks enough)?

Thanks in advance for your input!

Posted on: Fri, 03/16/2007 - 4:22pm
ahensley's picture
Joined: 08/23/2005 - 09:00

Hydration can effect RAST scores. We had different scores over the years from 120 to 150 (with less than 80 being negative) and the doc just chalked it up to different levels of hydration and basically called those two lab results the same.

Posted on: Sat, 03/17/2007 - 12:08am
chanda4's picture
Joined: 12/14/2006 - 09:00

the numbers are still low and I would be thrilled that after taking a bite of the reeces and spitting it out, nothign happened...I would be jumping for joy over that one!!
He is still young, so I wouldn't get discourgaed just yet. Get another year or two of levels under your belt and compare if they are truley going up or down. I would be thrilled with a 1.7...we're at a 21 now(at age 6!!)
Just keep avoiding as best you can and see what next years levels are...hang in there, you are doign a great job!!! And push that water on that kid too, good luck!!!
Chanda(mother of 4)
Sidney-8 (beef and chocolate, grasses, molds, weeds, guinea pig & asthma)
Jake-6 (peanut, all tree nuts, eggs, trees, grasses, weeds, molds, cats, dogs, guinea pig & eczema & asthma)
Carson-3 1/2 (milk, soy, egg, beef and pork, cats, dog, guinea pig and EE)
Savannah-1 (milk and egg)

Posted on: Sat, 03/17/2007 - 2:50am
Ree's picture
Joined: 12/31/2004 - 09:00

My 5 yr old ds' RAST went up from .9 to 1.5 last year. It had dropped 40% 3 years in a row and then this happened. The allergist said she considered this the same #, not to think it went up. If it shot up to 20, she would've been concerned, but not to 1 or 2.
I wouldn't worry about it. BUT, I did, so I know how you feel! [img][/img]

Posted on: Sat, 03/17/2007 - 4:24am
nutty-mom's picture
Joined: 02/19/2004 - 09:00

Thanks for all the encouraging responses! I'm feeling less freaked out.

Posted on: Sat, 03/17/2007 - 6:37am
dgood's picture
Joined: 03/27/2004 - 09:00

Can you explain the hydration effect? That's the first time I've heard that. Thanks!

Posted on: Mon, 03/19/2007 - 12:40am
jtolpin's picture
Joined: 05/28/2003 - 09:00

No reaction? Less Reaction?
Forget the numbers... Whether it's .70, 1.5, or 99.99...
He's allergic.
Nice to see the numbers go down, sure, but they fluctuate, and it's NOT based on 'exposures'. Period.
OK. I dont know that but firsthand, but for OUR unique situation... It IS.
Nothing but hugs...
[b]* Beyond Obsessed * [/b]

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