RASK number - questions from parent of newly PA diagnosed daughter

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Hello all, My 4 year old daughter was diagnosed last week with severe peanut allergy based on the skin test. A blood test confirmed severity with a score of 26.3 I have some questions:

1. I know 26.3 is high? Is it uncommonly high?

2. She has eaten products with peanut flour (Chex Mix - peanut flour was the last ingredient in the list so I don't know how much was really in it) and Chinese food in the past without a reaction. Wouldn't you think an allergy so severe would have had a reaction?

3. The skin test showed no other allergies besides peanuts (we are waiting for other parts of the blood test to come back to confirm). Is it unheard of to be so severely allergic to peanuts and NOTHING else?

Thank you so much for your answers! Wife and I are new to this, and are feeling pretty overwhelmed (and down)

God Bless!

By cathlina on Mar 13, 2009

Please, please do not feed your daughter any type of product with peanuts. She could have a severe reaction at any time.

By mgn on Mar 14, 2009

Thanks Cathlina - I will certainly never have her near anything related to peanuts, but I am still curious about the questions I posted:

I know a RASK score of 26.3 is high. Is it UNCOMMONLY high? Do others here have a score like this?

The skin test showed no other allergies besides peanuts (we are waiting for other parts of the blood test to come back to confirm). Is it unheard of to be so severely allergic to peanuts and NOTHING else?

Thanks and God Bless

By cathlina on Mar 15, 2009

<0.35 KU/L : ALLERGEN LEVEL 0 - ABSENT OR UNDETECTABLE ALLERGEN SPECIFIC IgE

0.35 - 0.69 : ALLERGEN LEVEL 1 - LOW OF ALLERGEN SPECIFIC IgE

0.70 - 3.49 : ALLERGEN LEVEL 2 - MODERATE LEVEL OF ALLERGEN SPECIFIC IgE

3.50 - 17.49 : ALLERGEN LEVEL 3 - HIGH LEVEL OF ALLERGEN SPECIFIC IgE

17.50 - 49.99 : ALLERGEN LEVEL 4 - VERY HIGH LEVEL OF ALLERGEN SPECIFIC IgE

50.0 - 100.00 : ALLERGEN LEVEL 5 - VERY HIGH LEVEL OF ALLERGEN SPECIFIC IgE

> 100.00 : ALLERGEN LEVEL 6 - EXTREMELY HIGH LEVEL OF ALLERGEN SPECIFIC IgE

The result sheet also had the following statement:

IN FOOD ALLERGY, CIRCULATING IgE ANTIBODIES MAY REMAIN UNDETECTABLE BECAUSE THE ANTIBODY MAY BE DIRECTED TO ALLERGENS THAT ARE REVEALED OR ALTERED DURING INDUSTRIAL PROCESSING, COOKING OR DIGESTION AND DO NOT EXIST IN THE ORIGINAL FOOD.

A NEGATIVE OR EQUIVOCAL TEST RESULT SHOULD NOT BE INTERPRETED TO MEAN THAT THE PATIENT IS NOT OR NO LONGER SENSITIVE TO THE ALLERGEN TESTED. HYPERSENSITIVITY REACTIONS MAY STILL OCCUR. RESULTS SHOULD BE INTERPRETED WITH CAUTION.

By beagle on Mar 17, 2009

My son's RAST score is 112!

By ElizabethY on Mar 16, 2009

mgn - I'm sorry for your daughter's diagnosis, I know this must be a tough time for you right now. Don't worry too much about the numbers. I get hung up on them too, would love to see lower numbers, but in the end, you just have to be vigilent regardless of the numbers. My son also ate Chinese food before he was diagnosed at 18 months, and I'm sure he ate other things we wouldn't feed him now. Subsequent reactions can be more severe. It's best to stay away from peanuts and tree nuts, because even if there is no reaction to tree nuts, there is a significant chance of cross-contamination. I know there's a lot to think about right now, and I wish you the best as you begin to process this information.

By jenniferbfab on Mar 17, 2009

Our allergist does not believe there is much significance to the numbers. He pays more attention to the actual reactions experienced.

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