17 posts / 0 new
Last post
Posted on: Tue, 06/24/2003 - 2:15pm
Driving Me Nutty's picture
Joined: 05/01/2003 - 09:00

My ped ordered a RAST for my 22 mo old dd after a topical reaction to peanuts. Then we went to see the allergist, he wanted a CAP RAST done. Although I didn't want to put her through the horror of another blood draw, I understood the benefits.
Versus RAST, he claims that it is more consistent from lab to lab and that the result is more conclusive and predictive. If a low score on the CAP RAST the higher chance of growing out of it. And if under 15, there is only a 98% chance of having a severe reaction. My dd scored a 5 on the RAST (0-6 range) and >100 on the CAP RAST which is only scored 0-100 (6 levels within that). Based on her high score, he then suggested that we should not her be in an enclosed environment with peanuts as she might react to the proteins in the air.
Here's a link to one website comparing the 2 [url="http://www.isitallergy.com/physician/testcomp.asp"]http://www.isitallergy.com/physician/testcomp.asp[/url]
And here's another comparing the reliability of the tests [url="http://www.acs.ohio-state.edu/units/research/archive/allercap1.htm"]http://www.acs.ohio-state.edu/units/research/archive/allercap1.htm[/url]
[This message has been edited by Driving Me Nutty (edited June 25, 2003).]

Posted on: Wed, 06/25/2003 - 12:34am
Westporter's picture
Joined: 06/25/2003 - 09:00

I am new to this board and am upset about the skin vs blood test. My ds at 1years old was skin tested and was positive for peanuts. So, does that mean he may never outgrow this allergy? I read that 20% of kids do outgrow the peanut allergy (or am I being optimistic?) Has anyone outgrown peanut allergies that you know of?

Posted on: Wed, 06/25/2003 - 1:27am
Gwen 5's picture
Joined: 01/24/2003 - 09:00

Kami Mom,
You are right I am asking about my dd who will be 3 in Oct. of this year. My older dd is PA/TN allergic. My younger one has not been exposed, nor reacted to any PA products.
I want to get her tested as she will start preschool in the fall and I feel like we need to know.
I am not sure I have figured out the answer based on the replies though.
The allergist say's skin testing is the most accurate, but I don't want to have that be an exposure for her. Does it sound like the CAP-RAST is the way to go???
Thanks for everything,

Posted on: Wed, 06/25/2003 - 1:56am
anonymous's picture
Joined: 05/28/2009 - 16:42

Hi Westporter -- Yes there is research that states that certain children can outgrow their PA. Typically those that have been shown to outgrow it are diagnosed fairly young, absolutely avoid the allergen (including cross-contaminated food, like "may contains"), and do not have asthma.
And yes, I know someone who outgrew the allergy -- my 5 year old daughter!
HOWEVER, there is also research showing some children can get the allergy back. And that is the fear that I am living with right now.
Since you are new the the PA, there's a lot to learn. There's a wealth of information on this site, so please educate yourself. As you will find, not all allergists are as educated as some of the people on this board!
Did you have your 1-year old tested because of a reaction?
Gwen's Mom - As I mentioned in my previous post, Dr. Wood says that there is nothing you can learn by testing an unexposed child who is less than three. I would wait until she turns three. I am facing the exact same issue with my 2 1/2 year old. Basically, I have told the preschool the situation -- that she is to eat no food unless I have provided it or preapproved it. Then hopefully when she turns 3 (and tests negative!) we won't have to worry.
Samirosenjacken -- Don't know why Dr. Wood did a RAST instead of a CAP-RAST. Everything he has told me indicates the CAP-RAST is the ultimate test.
[This message has been edited by Kami's Mom (edited June 25, 2003).]

Posted on: Wed, 06/25/2003 - 3:57am
Westporter's picture
Joined: 06/25/2003 - 09:00

Hi Kami's mom,
My son (now 16 months old) went to an allergist because I thought he was allergic to milk. He is allergic to milk, egg & peanuts. I never had given him any form of peanuts prior to that knowing not to give him any til age 3.
I strongly believe (and feel quite guilty about it) that I gave him the peanut allergy. When I was 28 weeks pregnant, I was diagnosed with gestational diabetes. On the food program I followed contained peanuts and peanut butter for protein among other foods. I ate peanut butter and/or peanuts every day for protein (in the morning, and 2 snacks) because I am not a big fan of cheese, etc for protein. I NEVER thought about peanut allergies, it didn't occur to me since I have never been around someone with it.
Anyhow, I asked my son's pediatrician why the peanut butter & peanuts were on the list that the hospital gave me and she said that its not known what causes the allergy. But, I am convinced that my eating it every day caused this. Plus, there is no mention in any of my pregnancy books to stay away from peanuts. Any thought on this forum members?
Congratulations that your child outgrew it. Also, should I join the peanut allergy group for $25? I am a member of FAAN.
Thanks for the input.

Posted on: Wed, 06/25/2003 - 6:57am
anonymous's picture
Joined: 05/28/2009 - 16:42

Hey Westporter,
I know you feel guilty, but it's not your fault. You were only following the advice of medical professionals who should know better. Yes there are studies that show that sensitization can occur in the last trimester of pregnancy as well as through breastfeeding. It kills me that there seem to be no OBs or pediatricians who know about this. It's not until after our kids get the allergy that we find out all this stuff that we should have been doing.
About the skin test results: This excerpt is taken from a food allergy conference I attended last year as presented by Dr. Wood, a leading food allergist at Johns Hopkins:
"The problem with allergy testing is that there are a large number of inaccurate reults from both skin testing and blood testing...There are two main reasons for these false positive tests. First, it is possible to have enough IgE antibody to produce a positive allergy test but still be able to eat that food without difficulty. Second, when you are truly alergic to one food, it is common to have positive tests to other related foods..."
So when skin tests are not performed in response to an obvious reaction, I think their validity needs to be questioned.
I have been told that it is useless to test a child younger than 3 for a specific food allergy (unless of course that child has had a reaction). I don't know if this is because such a test on such a child may incorrectly show a positive result; or incorrectly show a negative result.
Given this information, perhaps there is hope that your child is not PA after all. And if the allergy is true, there is also hope that it could be outgrown.
Good luck!
[This message has been edited by Kami's Mom (edited June 25, 2003).]


Peanut Free and Nut Free Community

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

Latest Discussions

Latest Post by krisztina Thu, 02/20/2020 - 4:49pm
Comments: 1
Latest Post by chicken Thu, 02/20/2020 - 4:45pm
Comments: 3
Latest Post by lexy Tue, 01/28/2020 - 12:21am
Comments: 6
Latest Post by JRM20 Sun, 01/26/2020 - 11:15am
Comments: 6
Latest Post by JRM20 Sun, 01/26/2020 - 11:11am
Comments: 5
Latest Post by Italia38 Wed, 01/15/2020 - 11:03am
Comments: 10
Latest Post by Italia38 Wed, 01/15/2020 - 10:52am
Comments: 2
Latest Post by penelope Tue, 01/14/2020 - 1:03pm
Comments: 1

Peanut Free Store

More Articles

If children begin to eat many different foods at a young age, there is much more of a chance that by the time they are in school, they will eat...

Those with peanut allergies often find that they are unable to enjoy dessert since there's always the...

For those with peanut allergies, baked goods present a serious risk. Many baked goods do not appear to contain peanuts, yet were baked in a...

If you've ever tried to find...

If you find frequent allergy-related food recalls upsetting you are not alone, but a new federal rule may help reduce the cross-contamination...

If you or your child has a peanut or nut allergy, identifying the presence of nuts in food becomes a priority, but what if the written or spoken...

Tree nuts and peanuts are distinctly different. An allergy to one does not guarantee an allergy to the other. Peanuts are considered legumes and...

Welcome to the complex world of being a Peanut Allergy Parent. Get ready to proofread food labels, get creative with meals, and constantly hold an...

Scientists are developing a skin patch, much like the nicotine patch, that may cure deadly peanut allergies.

The patch contains tiny traces...

I love to cook and bake! I remember from a very young age cooking with my grandmother, teaching me all of the basics like making sure to mix in...

Take control of your food allergies! Get results in ten days and change your life forever! If you are tempted to use a home testing kit...

Parents of children with food allergies often share tips about safe foods, allergy-friendly restaurants, and other experiences and challenges of...

According to the results of a new study, children lacking Vitamin D may be more susceptible to food allergies. Researchers working at the Albert...

Nearly all infants are fussy at times. But how do you know when your baby's crying means something wrong? Some babies are excessively fussy...

Those who have peanut allergies know to avoid peanut butter cookies, of course – but what about other...

Which candy bars are safe for those with peanut allergies? Those without allergies are accustomed to...

Are you looking for peanut-free candies as a special treat for a child with...

For those who have wondered whether airport x-ray machines negatively affect epinephrine auto-injectors, the folks at Food Allergy Research &...

Molecular allergy component testing identifies the specific food or environmental proteins triggering a person’s allergic reactions. Component...

An epinephrine auto-injector provides an emergency dose of epinephrine (adrenaline) to treat life-threatening allergic reactions. Those who have...