CAP-RAST scores and outgrowing PA

Posted on: Thu, 03/14/2002 - 6:37am
anonymous's picture
Joined: 05/28/2009 - 16:42

I attended FAAN's allergy conference in Baltimore last weekend. There seems to be a lot of questions regarding CAP-RAST scores and outgrowing PA on this board, so I thought I'd share a bit of Dr. Robert Wood's presentation with everyone.

(For those of you who don't know, Dr. Wood has been conducting research at Johns Hopkins on outgrowing PA, is himself allergic, and is an excellent pediatric allergist. I speak from experience since he is my daughter's!).

Dr. Wood's research originally showed that about 21% of children outgrow their PA; an update on this research indicates the number is slightly higher! Even some children who experienced severe reactions have been known to outgrow their allergy (although the odds were better with milder reactions). A RAST less than 5 means 60% likely to outgrow; a RAST less than 2 means 70% likely.

Dr. Wood said he would not consider a food challenge unless the RAST was less than 5. He said he would not bother to do a skin test to confirm an outgrown allergy because there is such a high false positive (however, false negative skin tests are uncommon).

He said a very important key to outgrowing allergy is strict avoidance -- even foods that don't seem to cause a reaction can still affect the ability to outgrow peanuts if the protein is present even in small amounts.

He also noted it was important not to base your treatment plan on IgE levels -- that they are not necessarily proportionate to one's reaction. Also, he said EVERY peanut allergy is potentially life threatening -- that previous reactions do not necessarily predict future reactions.

But on a positive note: he believes we are 5-10 years away from an effecive treatment! Let's pray he's correct!

If anyone has an opportunity to attend a FAAN conference, I highly recommend it. I found it very informative.

Posted on: Thu, 03/14/2002 - 6:48am
smack's picture
Joined: 11/14/2001 - 09:00

Kami's Mom,
Thank you, that was very informative and well written!

Posted on: Thu, 03/14/2002 - 10:11am
BENSMOM's picture
Joined: 05/20/2000 - 09:00

Thanks Kami's mom. I also went to Dr. Wood (just once.) He gave me good info. Thanks for posting.

Posted on: Thu, 03/14/2002 - 10:22am
Corvallis Mom's picture
Joined: 05/22/2001 - 09:00

Just for clarification here, is that a CLASS 5? or is this 5 kU/L IgE? (which would be what, class 2?)
Obviously, there is a substantial difference!
Very good information!

Posted on: Thu, 03/14/2002 - 12:32pm
kcmom's picture
Joined: 12/18/2001 - 09:00

When you said about strict avoidance, even to foods that don't seem to cause a reaction, does that mean any food in the legume family. Of course we avoid anything that may contain peanut or any nut anything, that's given. But, my daughter does eat green beans and peas with no problem, should we avoid these also as they are in the legume family. Also should we avoid things that have a reported cross reaction for people like gums (guar, xanthum etc). She has had no problem with these either, even though I still watch for them, she had them before i knew they may cross-react. My daughter scored a 5.94 KU/L so we are on the line and I want to give her every possible chance to grow out. Thanks!

Posted on: Fri, 03/15/2002 - 1:33am
anonymous's picture
Joined: 05/28/2009 - 16:42

In response to questions:
Corvalis Mom: 5 refers to the actual CAP-RAST score, not the classification (sorry, I don't know the units of measurement).
kcmom: When Dr. Wood referred to strict avoidance, it's my understanding he was referring to the cross-contamination issue. The main culprits he cited for this were baked goods, candy, ice cream, and ethnic (esp. Chinese) foods. He seemed to be concerned about parents feeding their children these types of foods, reasoning that since they don't react they must be ok.
He did not mention avoiding other legumes. However, he did tell me at my daughter's last appointment that she should avoid lentils. He said they are the only other legume cross-reactive with peanuts. Hope that helps to clarify.

Posted on: Fri, 03/15/2002 - 10:25am
kcmom's picture
Joined: 12/18/2001 - 09:00

Thanks Kami's mom, that does help! [img][/img] I had myself a little panic there thinking maybe I should not be feeding her veggies! I'm okay otherwise because I do not feed her any of the others. Only homemade things from scratch so we know exactly what is in. My mom is loving making homemade ice-cream! Thanks again!! [img][/img]

Posted on: Mon, 04/22/2002 - 12:35pm
brenda's picture
Joined: 01/22/1999 - 09:00

Kami's Mom,
Thanks for Dr. Wood's info on lentils being the only legume cross-reactive with peanuts. My PA daughter eats peas and string beans and has been tested for many legumes by CAP RArST-- they only legume she tested positive for was Lentil (she has never eaten it)!

Posted on: Thu, 05/09/2002 - 11:21am
Sandy's picture
Joined: 05/27/2002 - 09:00

Great information! I thought that once you have a severe allergy to peanuts, you never grow out of it. You just gave me a little hope. I also heard 8 years ago that that were coming up with a blocker for p.a. people. Now you say that we have to wait another 5-10 years more! What a drag.... Oh well, at least they are working on it! My allergist said to stay away from peas, beans (anything that is a legume). The only green veggies we eat are broccoli, asparagus and occasionally cabbage.

Peanut Free and Nut Free Community

Click on one of the categories below to see all topics and discussions.

Latest Discussions

Latest Post by beachgal2020 Thu, 07/09/2020 - 2:17pm
Comments: 173
Latest Post by beachgal2020 Thu, 07/09/2020 - 2:08pm
Comments: 714
Latest Post by beachgal2020 Thu, 07/09/2020 - 1:51pm
Comments: 483
Latest Post by doggydude (not verified) Wed, 07/08/2020 - 6:06am
Comments: 9
Latest Post by doggydude (not verified) Wed, 07/08/2020 - 6:00am
Comments: 14
Latest Post by SmilinMo Tue, 06/09/2020 - 11:29am
Comments: 7
Latest Post by MoRich Mon, 06/01/2020 - 10:06am
Comments: 6
Latest Post by Sarah McKenzie Fri, 05/22/2020 - 12:57pm
Comments: 6
Latest Post by JRM20 Wed, 05/20/2020 - 9:30am
Comments: 5

Peanut Free Store

More Articles

Peanuts and Nuts Can Trigger An Asthma Attack

According to the American Academy of Allergy, Asthma and Immunology (AAAI), more than 3...

There are more "peanut-free" products than ever on the supermarket shelves. This means more choices than ever for peanut-allergic shoppers and...

It Is Easy To Buy Peanut Free Chocolate Online

Ask any parent of a child with a potentially life-...

How Do You Determine If A Food Is Safe For A Peanut Allergic Person?

The answer varies. “Peanut-free” means different things to different...

Recently, the U.S. Food and Drug Administration (FDA) approved a New Drug Application for an epinephrine auto-injector (EAI) designed for use with...

Fact 1: Over a third of food allergy reactions happen after the first known oral...

It can be easy to overlook the presence of nut allergens in non-food items because the allergens are often listed by their Latin or scientific...

It’s hard to think of Chinese food without thinking of peanuts. China is the world’s leading peanut producer, and that’s not a coincidence....

Soymilk is one of the most popular alternatives to cow’s milk. As well as being rich in fiber, soy is a great source of protein and contains all...

My mom was at a lakeside restaurant enjoying fish and chips when her mouth began tingling. The next day at a family gathering, we had grilled...

Peanuts and peanut oil are cheap and easy additives to food and other commercial goods. It is surprising (and alarming if you have a...

Vegetable oil is healthy before it is hydrogenated and a process that requires adding hydrogen to unsaturated fats. Oils that are often...

Although it's true that peanuts are in many snack items, there are several snacks that do not contain peanuts. Anyone who has a peanut...

The most frightening thing about a severe allergic reaction to a new food is that it can happen so fast. If parents are not looking for allergic...

It may never be safe to begin feeding peanut butter to your baby or toddler if you have peanut allergies in your family. If either parent or one...

Families who have food allergies are familiar with reading food labels and of being aware of everything that they or their allergic child eats....

If a parent is alert and observing their toddler when peanuts are first introduced, the chance of the child receiving help if she has a reaction...

For those who don't have experience with peanut allergies, going 'peanut-free' often seems as easy as avoiding peanut butter sandwiches and bags...

Dealing with food allergies can be difficult, especially if you're not sure what's 'safe' to buy. This is especially true for those with severe...

Are you craving sweets? Those with peanut allergies must be especially careful when indulging their...