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Posted on: Wed, 03/15/2006 - 7:11am
momto1son's picture
Joined: 02/27/2006 - 09:00

My son had the blood RAST test and they tested for several tree nuts, peanuts, outdoor allergins, dogs, cats.... so they can test for several things at one time. Good luck

Posted on: Wed, 03/15/2006 - 7:50am
anonymous's picture
Joined: 05/28/2009 - 16:42

I don't understand why the doctors don't want to test until they have known exposure. Why are pregnant and nursing mom's being cautioned to avoid eating highly allergic foods? Isn't it because it exposes the unborn or newborn babies to these foods? My son tested positive to foods at 5 mos of age. His only exposure to any of the foods he is allergic to was through breastmilk, and logically, pregnancy.
If a child was breastfed and mom did not eliminate the foods from her diet, I'd argue that there has been exposure for that child. How else would young, breastfed children like mine have positive results for the RAST tests and resolved symptoms when the foods were removed from mom's diet?
Just a thought...no medical background...might not be applicable to bottlefed babies...just wanted to throw it out there.

Posted on: Wed, 03/15/2006 - 8:13am
anonymous's picture
Joined: 05/28/2009 - 16:42

Sorry, I ended before I answered your questions. I was just frustrated with your allergist's response because it was similar to my allergist. It seems like they would rather treat symptoms instead of being proactive and prevent symptoms in the first place.
We are fortunate enough to be in an HMO and so do not know the actual costs of the tests. We pay our co-pay and then have as many things tested for from one blood draw. Our pediatrician tested for cat dander, dog dander and dust mites via blood. So I know those can be tested in that way. I have no idea of their accuracy. It only took a few days for the doctor to get the results from the lab. Then a few more days for dr. to contact me. Hope this helps a little!
Good luck!

Posted on: Wed, 03/15/2006 - 11:08am
dgood's picture
Joined: 03/27/2004 - 09:00

My daughter just had her third annual blood work completed. The list is about 20 food items plus latex. Our allergist also seems to hold back when I ask to add items to the list.
This year, I asked to add fish and shellfish just to see if she developed an allergy through any cross contamination. He kind of shrugged about it, but I am a bit persistent.
Last year, I added latex and sure enough it came back positive.
One of the drawbacks to a longer list is that they need to draw more than one tube of blood. They drew 4 tubes of blood to test for the items on her list. Not that big of a deal, just takes an extra 30 seconds or so to sit still.
If your insurance covers it, I wouldn't think twice about requesting to have the items tested that you want. It is much easier than skin pricks!!!

Posted on: Fri, 08/25/2006 - 7:17am
kandomom's picture
Joined: 01/12/2006 - 09:00

Personally- I don't need to know a number, but many people do like to have as much information as possible. To me, allergic is allergic. My DD has only reacted w/ hives too (18mths) and she is now 10 ans still allergic. She has never had a RAST (blood) test, but has been skin tested.
Looks like you are on the search for allergist #3!
In the meantime, do you have an Epi-pen? Read labels, stay away from peanuts and avoiding tree nuts until you child is older is a good idea.
You don't need to test yearly (skin prick or blood), but many people do. Again, to get as much info as possible.
The number from the test does not predict the severity of reaction and reactions can worsen upon subsequent exposure.

Posted on: Fri, 08/25/2006 - 7:40am
Sharonagain's picture
Joined: 08/13/2006 - 09:00

Hi. We have Epipens. The allergist told us to give him shelled walnuts, etc. when he can chew better since the mixed nut skin test was negative. He has eaten honey nut cheerios, and probably other things with nuts for the last 6-8 months with no reactions. I am calling the companies whose packages say "may contain tree nuts" and ask them if they use peanuts, peanut oil, etc. in their facilities. If they don't, we are continuing to give him these foods since he is not allergic. It is possible that he could become allergic to tree nuts, but he could also become allergic to milk, eggs and a variety of other things, too.

Posted on: Fri, 08/25/2006 - 8:47am
anonymous's picture
Joined: 05/28/2009 - 16:42

I am not too sure if you should be feeding him tree nuts. I was told by 2 allergist and my pediatrician not to give tree nuts. My son who is 2 had eaten peanut butter products before he had a reaction (which didn't happen for 2 hrs-head to toe hives) and eating honey nut cheerios, but after his reaction we stopped all nuts. I guess it is all what someones comfort zone is and that is not mine. You could always request a cap rast test from your allergist and if he will not do it find another dr. I wanted it just to see what the #'s were. My son was 1.2 for peanut and 1.8 for egg white. I am hoping he will outgrow, but will continue to live nut free for now and forever if need be.

Posted on: Fri, 08/25/2006 - 10:37am
gvmom's picture
Joined: 08/24/2005 - 09:00

Feeding your child tree nuts, given your stated situation, sounds dangerous to me. My son is allergic to peanuts and tree nuts. He had eaten Honey Nut Cheerios (almond being the only nut with almost non-existent numbers)- before we even ventured to let him try peanut butter. Had we fed him walnuts though, based on his ability to eat things with scant almonds in them, we would have ended up killing him.
Surprising that an allergist wouldn't test, retest, both peanuts and tree nuts. I would gladly have either of my children get a RAST or skin test, to avoid the greater possible pain they would experience from anaphylaxis.
Is there a 3rd allergist available for you to go to? Or would your pediatrician order the test for you?

Posted on: Sun, 08/27/2006 - 3:44am
Sharonagain's picture
Joined: 08/13/2006 - 09:00

Hi. From what I've gathered from the HOURS and DAYS of research I've done and from the information from numerous medical professionals, the only reason to keep my son off of tree nuts (since 2 allergy tests showed that he was NOT allergic) is because of the fear of cross-contamination. I've called the company who makes Honey Nut Cheerios and they told me that they do not use peanuts or derivatives or use them on the same equipment with peanuts. I see no reason not to give him tree nuts if he is not allergic to them and there is no chance of cross-contamination. One allergist even told him to give him walnuts and other shelled nuts when he can chew better.

Posted on: Sun, 08/27/2006 - 4:58am
Daisy's picture
Joined: 01/16/2006 - 09:00

You already sound like an old pro, calling all the companies to check for cross-contamination with peanuts. Way to go!
Since your son is not even 2, other nuts aren't a big dietary issue right now. Sounds like you're doing well with the tree-nut-containing items. As you gradually introduce more of these, you will get an idea of his tolerance, which may very well be ok.
You do need to find another allergist in the next year or two. He/she will be your best resource when your DS starts Preschool or Kindergarten. This is also a good time/reason for re-testing.
The numbers are just for "tracking" purposes. Some go up; some go down. Perhaps if he has *other* bloodwork drawn in the next year or two, you could get your Ped to addon the RAST. But again, not to confirm the allergy, just for tracking through the years.
Good luck,
[This message has been edited by Daisy (edited August 27, 2006).]


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