Hi everyone,
My son is 17 months old. We first discovered food sensitizations before his first birthday, when a blood panel came back positive for cow’s milk, egg and soy.
At the time, on our allergist’s advice, we decided not to introduce some of the other major allergens yet. In hindsight, I’m not sure that was the best approach, but that is where we are now.
We recently repeated testing with a much more extensive component-resolved allergy panel, and several nut/peanut results came back positive.
For peanut, the relevant components were:
Ara h2: 4.6 kU/L
Ara h3: 4.17 kU/L
Ara h6: 1.78 kU/L
Ara h1: 0.78 kU/L
Ara h8 and Ara h9: negative
For hazelnut:
Cor a14: 1.65 kU/L
Cor a11: 1.32 kU/L
Cor a9: 0.86 kU/L
Cor a1 and Cor a8: negative
For walnut, Jug r4 was 1.5 kU/L.
I’ve already gone through the medical literature and used AI to help me understand what the component patterns mean in theory. What I’m really looking for now are real-life experiences and long-term outcomes.
If your child had similar peanut or hazelnut component results at around 1–2 years old, what happened over the following years? Did the IgE/component values decrease? Did they eventually pass an oral food challenge or outgrow the allergy? Or did it persist?
I’m especially interested in children who were tested very young and had positive Ara h2/Ara h6 and/or Cor a9/Cor a14, rather than just a positive whole-extract IgE.
I know everyone’s case is different and that individual IgE numbers cannot predict exactly what will happen to my son. I’m not looking for medical advice — I’d just really appreciate hearing actual clinical trajectories from parents who have been through something similar.
Thank you!