Itchy skin after an oat-based moisturiser, or hives after your morning porridge? Oats are everywhere now, from oat milk in your coffee to the creams many parents use for eczema. Our test checks your blood for IgE to whole oats, as part of 300 allergens and allergen components, with wheat, barley, rye and grass pollen on the same report.
Oats are a cereal grass, more distant from wheat than barley and rye are. Their storage proteins (avenins) differ from wheat gluten, and an IgE allergy to oats is uncommon compared with wheat.
Skin contact is one route people often miss. A French study of children with eczema found oat sensitisation in about one in five, and it was much more common in children whose parents used oat-based creams. Only a small share of the sensitised children reacted when they ate oats.
Reactions people describe after eating oats include hives, itching, swollen lips, stomach cramps and, less often, wheezing. With oat-based creams, people describe redness and itching where the cream was applied.
In babies, oats are one of the more common triggers of FPIES, a delayed reaction with repeated vomiting a few hours after eating. FPIES is not driven by IgE, so an IgE test does not detect it. Any baby who vomits repeatedly or becomes floppy after food needs a doctor straight away.
Swelling of the lips, tongue or throat, trouble breathing or feeling faint after eating is an emergency. Call 112 (EU) or your local emergency number. Do not wait for a test.
Oats are a grass, and whole cereal extracts share proteins with grass pollen. People with summer hay fever often show some IgE to oats and eat porridge without trouble.
So a positive oat result shows sensitisation. It does not tell you that you will react. Oats are also linked to coeliac disease questions, partly because oats are often contaminated with wheat. Coeliac disease is a different condition that this IgE test does not measure. If you have reacted to oats, take your result to a doctor.
The lab measures IgE to one whole oat extract, which covers the full mix of oat proteins rather than single components. Your lab report gives it a measured value and class, from Negative to Very high, next to wheat, barley, rye and the grass pollen proteins on the same panel.
Page last updated
One finger-prick sample checks IgE to 300 allergens and allergen components, from birch and peanut to cat and house dust mite. Post it to the lab, and about 5 days after it arrives you get a value for every one. Our plain-English guide shows you how to read them. €399 in total, €1.33 per allergen.
Yes, though IgE oat allergy is uncommon. Sensitisation is more frequent, for example in children with eczema who use oat creams. Our test measures IgE to whole oats; a doctor reads that together with what you experience.
No. Oat allergy involves IgE antibodies and usually quick reactions. Coeliac disease and gluten sensitivity are different conditions, and oats are often contaminated with wheat. Our test measures IgE only and says nothing about coeliac disease.
Probably not. Delayed, repeated vomiting after oats in babies fits FPIES, which is not driven by IgE. Talk to your child's doctor. Any baby who vomits repeatedly or becomes pale or floppy needs urgent care.
