I know RAST results accuracy is debatable, but I was interested in having it done to get more information. My son (15 months) had the skin test for milk in May and tested positive. When I saw similar spots when he had scrambled eggs, I decided to do a blood test for dairy and eggs so that I could get a "baseline" number for dairy and get some indication for egg too.
The results showed that for dairy he is a Class 3 allergy with a 6. For egg he is a Class 1 at .48.
Just curious if anyone had insight to share about these numbers. Our doctor said that for dairy the number indicates that my son will react 95% of the time but the severity of the reaction can vary (so far if he has consumed dairy it has been spots that dissipate within an hour). He said that the number does not indicate whether it is likely he will outgrow it. For egg, the allergist recommended still serving egg in baked goods as we have not noticed a reaction unless it is just scrambled eggs.
Just looking for any personal experience or advice you gleaned from your docs about Class 3 Dairy allergies. Can they be outgrown? Has your child reacted severely at Class 3? Any wisdom appreciated ![]()
Re: RAST Results for Dairy. Seeking your 2 cents.
this chart should help..
Dairy shows as "high level" and egg as "low level"
I don't think it's possible to know if a child will outgrow a specific allergen or not until he's at least 5.. you can just be hopeful.
I have heard that kids allergies can sky rocket between age 2 and 4 and then finally start to settle and hopefully disappear by 5. so if you see his numbers go way up around this age, don't freak out. Something with their immune system.
There are some kids that can be at a high level and still tolerate their allergens, but i'm not planning on trying that one. you just never know when their body rejects it and go into a shock.
Here is the chart...
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IgE
kU/L
Level of Allergen
0
<0.35
Absent/Undectable
1
0.35-0.70
Low Level
2
0.71-3.50
Moderate Level
3
3.51-17.5
HighLevel
4
17.6-50
Very High Level
5
51-100
Very High Level
6
>100
Very High Level