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Doctor insights on: What Does A Class 3 Allergy Mean

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What does a class 3 allergy to eggs mean?

What does a class 3 allergy to eggs mean?

High level allergy: When food allergies are evaluated by blood tests, the amount of allergic antibody (ige) against a particular food is quantified and a classification is assigned. The higher the class, the more antibody was found against that food. Class 0 has little or no ige detected while class 6 means very high levels were found. Most allergists feel class 3 or higher indicates significant allergy. ...Read more

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Dr. John Chiu
2,479 doctors shared insights

Allergies (Definition)

Allergies occur when your immune system is triggered by envirionmental factors it should ignore--for example, pollen in the air, or dander on a cat or dog--and creates cells to fight against them. An allergic reaction typically causes itching, congestion, or drainage, and ...Read more


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Does a class 3 allergy require an epi pen? My daughter just got diagnosed with a class 3 peanut allergy.

Does a class 3 allergy require an epi pen? My daughter just got diagnosed with a class 3 peanut allergy.

Need epipen (epinephrine): Numbers do not always correlate well with severity of eventual reaction, so I wouldn't say she's safe because it's only a level 3. For something like possible peanut allergy, I'd discuss/consult with an allergist because this situation could be life or death ...Read more

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What is a class 3 allergy?

What is a class 3 allergy?

Moderate RAST result: Dr. Shulan is correct: type 3 immune reactions involve igg & antigen. "class 3 allergy" may also refer to rast, a blood test for detecting ige against antigen. For convenience labs define from 5 to 7 levels. Class 2 is often borderline & class 3 low positive. But positive is positive. There is little significant difference between class 3 & class 6. Photo: dr & dr ishizaka, discoverers of ige. ...Read more

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What is a class 3 allergy to eggs?

What is a class 3 allergy to eggs?

History is more imp: Not really sure what is meant by this. For food allergy the most important aspect in making this diagnosis is the patient history and what type of reaction occurered. Then food allergy skin test or blood test are done to confirm the history. The level of positivity on these tests are not really predictive of the type of reaction one could have. ...Read more

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My 10 month old son has a class 3 allergy to peanuts and milk. When given milk products his face breaks out in hives. is class 3 serious?

My 10 month old son has a class 3 allergy to peanuts and milk. When given milk products his face breaks out in hives. is class 3 serious?

Mgt: Most allergic reactions are mild and involve only the GI system and skin, but sometimes there can be a more severe reaction. It is important to avoid the triggering agents. Your PCP can advise, but there are several good resources for parents online for food allergies. ...Read more

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I got allergy test result for my 9 month old son but don't know how to read it. report has two columns: "Kiu(A)/L" and "class". What does each mean?

I got allergy test result for my 9 month old son but don't know how to read it.  report has two columns: "Kiu(A)/L" and "class". What does each mean?

Talk to doctor: A test by itself cannot make a diagnosis and it is the job of the doctor who ordered the tests to interpret them for you. Do give him a call. ...Read more

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If my allergy blood tests detected class 1 for milk and class 2 for wheat and egg and I ate pizza tonight with no reaction, means I'm not allergic?

If my allergy blood tests detected class 1 for milk and class 2 for wheat and egg and I ate pizza tonight with no reaction, means I'm not allergic?

History most impt: Allergy testing is used as a tool to confirm or eliminate allergens as a cause for allergies. The most common way to test is either on the skin or in the blood. If you have not had an allergic reaction to the foods mentioned above, then you are not allergic. Being reactive on the skin or finding allergic antibodies in blood means little without a history or lack of history to confirm. ...Read more

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What does it mean for a dentist to say you have a class 3 malocclusion?

What does it mean for a dentist to say you have a class 3 malocclusion?

Prognathism: or an Angle Class III malocclusion means that the lower jaw protrudes forward and has a significant genetic component. ...Read more

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63 year-old woman still has continuous mild stomach pain affecting her daily life, despite 3 yrs of medical treatment for gastritis found after.....?

63 year-old woman still has continuous mild stomach pain affecting her daily life, despite 3 yrs of medical treatment for gastritis found after.....?

Cause of pain?: From the description, I'm not convinced the pain is from the gastritis. Further workup is needed. If not already done, I'd start with a current H&P, followed by new more thorough labs and/or a CT of the abdomen. ...Read more

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