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Doctor insights on: Allergy Test Class 3

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Is it "normal" to have common cold or allergies every two to three months? How do you prevent it? Will I need an allergy test to find the cause?

Is it "normal" to have common cold or allergies every two to three months? How do you prevent it? Will I need an allergy test to find the cause?

Perhaps but: The average adults have about 3 colds a year and thus your problem may not be unusual until the duration of the cold exceeds 2-3 weeks each time and the occurrence is seasonal. If you have a "cold" every 2 months however, then the chance for allergy rises. The presence of itching and lack of a fever would point more to allergy and allergy tests would be the answer. ...Read more

Dr. John Chiu
2,638 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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Which medications should I stop before the allergy test. And for how long should I stop them is it three days or 1 week is vitamins ok to take?

Which medications should I stop before the allergy test. And for how long should I stop them is it three days or 1 week is vitamins ok to take?

Antihistamines: Vitamins are ok. Primarily it is antihistamines that are the issue, and need to be avoided for a week prior to the test. Some for 5 days, depends on the allergist and the method of testing. Beware of antihistamines now in nasal sprays and eyedrops. Plus certain pysch drugs (notably antidepressants). Tests should include + and - control tests; + control doesn't show positive? Problem. ...Read more

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My? Was should I be afraid to eat corn since my allergy test showed I was class 1 really low to corn can I eat the corn additives I've never had prob

My? Was should I be afraid to eat corn since my allergy test showed I was class 1 really low to corn can I eat the corn additives I've never had prob

PFTs: Your history indicates that you have breathlessness. The cause for this should be determined. Since your physician has ordered allergy testing, they can guide your diet. Grd one reactions with no symptoms associated are unlikely to cause future problems. A pulmonary function test with and without a bronchodilator is indicated though for your respiratory symptoms. ...Read more

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Allergy test- please help interpret results? Many different "classes" on the blood test.

Allergy test- please help interpret results? Many different "classes" on the blood test.

It depends.: This depends on what test you got and your results. A blood allergy test is a radioimmunoassay test that measures ige response to allergens. These responses are graded on a scale from 0 to 6 where 0 is no reaction and 6 is extremely high level of ige to allergen. The skin test is where a small amount of allergen is injected into the skin and if there is 2mm swelling in 10 minutes, it's positive. ...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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I an suffering from excess hairloss. Ial am very depressed. These are falling 60-70 in number daily. I have gone for wheat allergy test, tsh, haemotology (from the past two years my hb kevel is 7-8 only. Three weeks back I had diarrohea and my hb level was 10.8.

I an suffering from excess hairloss. Ial am very depressed. These are falling 60-70 in number daily. I have gone for wheat allergy test, tsh, haemotology (from the past two years my hb kevel is 7-8 only. Three weeks back I had diarrohea and my hb level was 10.8.

Not surprising: Need to talk to your doctor. Iron-def has been linked to hair loss but there are other causes for it. At the minimum, you need to find the cause for your anemia. I also don't understand when your hgb levels were obtained. Was it 10.8 now but 7-8 2 years ago or vice versa? ...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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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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Is it worth it to allergy test (skin prick) a 3 month baby?

Is it worth it to allergy test (skin prick) a 3 month baby?

Depends: It would depend on the clinical symptoms or reaction which your child has/had. For example, it can be useful in severe eczematous patients as studies range in a 30-50% rate of a food allergy which could potentially be triggering/contributing to your child's eczema. This should be discussed in detail with your child's allergy specialist. ...Read more

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Please tell me recommendations for getting an allergy test?

Please tell me recommendations for getting an allergy test?

Identification: Allergy testing is indicated for the evaluation of patients who have year round nasal symptoms, asthma symptoms, severe bee sting reactions, symptoms after eating foods in an attempt to identify the specific allergen trigger so it can be avoided if possible. Also, allergy testing is necessary before considering allergy shots so the right allergens are included. ...Read more

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Docs, could a positive allergy test be wrong?

Docs, could a positive allergy test be wrong?

Yes: If it was a skin test that resulted in a welt formation its less likely to be false positive. The tests where blood is drawn an they count histamine response to different agents often gives results that you do not have in daily living. The large plasma panels often give results stating wheat allergy, nut allergy, tomato allergy yet you eat bread, nuts and pizza every day. It may not be true ...Read more

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On a skin prick allergy test what does a 2E mean?

On a skin prick allergy test what does a 2E mean?

Just a guess: E usually indicate erythema or the red area around the wheal of a skin test. I would presume that this meant a 2+ reaction on the erythema. In allergy testing however it is the size the wheal and not erythema that counts the most. Perhaps this question can be better answered by the allergist who did the skin test. ...Read more

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Can you have an allergy test done on a 4 month baby?

Can you have an allergy test done on a 4 month baby?

No: Waste of money prior to age 3 as the results are not reliable in a 4month old. ...Read more

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Do you know are allergy test done in herbal shops a scam?

Do you know are allergy test done in herbal shops a scam?

Probably: Medicine is highly regulated and therapies, tests etc must be shown to work or they are NOT approved. Why would you buy from a store that is outside of this tight regulation. .. you're asking for trouble. ...Read more

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When I get an allergy test, will they need to draw blood?

When I get an allergy test, will they need to draw blood?

Maybe not: It depends what allergies are bring considered. Sometimes we do both as a confirmation. Or just a blood test first if the reaction you had was severe. ...Read more

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What kind of allergy test will probably be done on my 16 month old?

Allergy test: Depending on your baby's symptoms, allergist can perform a prick skin test that tests for environmental and/or food allergens. The test is relatively painless and only scratches the very first layers of skin. If the baby's skin is too involved in eczema, or other skin conditions, they may opt for a blood test, which is considered less sensitive, but still provides good results depending on the lab. ...Read more

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Please tell me how long is a skin prick allergy test supposed to take?

Please tell me how long is a skin prick allergy test supposed to take?

Minutes: A trained allergist can place allergy prick skin test in about 2 seconds and interpretation is done at 20 minutes. The multi-test can place 8 tests at a time to make it even quicker. For more information on allergy skin testing go to my blog at : http://www. Familyallergyasthmacare. Com/2012/10/comfortable-allergy-skin-testing/. ...Read more

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What do these allergy test results mean: highly positive with pseudopods?

What do these allergy test results mean: highly positive with pseudopods?

Extremely sensitive: To the allergen tested, if it is an aeroallergen or a food allergen, your allergist/immunologist would describe you the treatment options, good luck ...Read more

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How should one prepare for an allergy test? Do you have to skip all your allergy meds?

No major preparation: A blood allergy test measures ige response to allergens. These responses are graded from 0 to 6 where 0 is no reaction and 6 is maximum of ige to allergen. The skin test is where a small amount of allergen is injected into the skin and if there is 2mm swelling after 10 min. It's positive. There is no preparation to do for these tests. Just allergy history and physical before the tests. ...Read more

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My daughter recently took an allergy test and is allergic to almost everything. What can be done?

My daughter recently took an allergy test and is allergic to almost everything. What can be done?

It depends: Talk with your doctor. Some foods may be simply avoided if they cause allergy symptoms. Depending on her age and the severity of the allergic response, she may be a candidate for allergy shots. Some airborne allergens will be nearly impossible to avoid, and she may need preventative type medications such as steroid nasal inhalers. ...Read more

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I have a mild reaction to the soap my work uses right now. My bro started the same way and it got worse. Can a allergy test detect mild reactions?

I have a mild reaction to the soap my work uses right now. My bro started the same way and it got worse. Can a allergy test detect mild reactions?

Yes, patch testing: The most common work related reactions to soaps, creams an lotions is contact dermatitis. This involves itchy scales or blistering reactions that start towards the end of your work day and gradually get worse as the week progresses. A dermatologist or an Allergist that does patch testing would help sort out what chemical in that soap could be causing the problem and which soaps would be safe. ...Read more

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My niece had an allergy test which shows she's severly allergic to cats. They have had cats since she was born and they never bother? Could it be wrong

My niece had an allergy test which shows she's severly allergic to cats. They have had cats since she was born and they never bother? Could it be wrong

Interesting: First off one needs to understand that a positive skin test or blood test does not mean one is allergic to that allergen. It simply means there is a positive test. Additionally, the size of the skin test or the degree of positivity of a blood test does not quantify the severity of one's allergy. The patients clinical symptoms and history dictate what is clinically significant allergy. ...Read more

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Is there an allergy test I can have to see if I am still allergic to penicillin? Had a rashreaction to penicillin but wonder if it was a true allergy?

Is there an allergy test I can have to see if I am still allergic to penicillin? Had a rashreaction to penicillin but wonder if it was a true allergy?

Yes: An allergist can test for it and also check the most common allergens which you may not be aware of. Now whether it is worth going through all that is another matter. You can always get the real story about possibility of penicillin allergy when it is important to know. ...Read more

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What's the most commonly used allergy test if hives?

All of them.: If someone has hives that are consistent with allergy, they may be tested to most of the food allergens if it is unclear which foods are the likely culprits. However, frequently people that have hives due to allergy have a pretty good idea which food or foods may be the cause. Most common food allergens are milk, egg, wheat, corn, soybean, peanut, tree nuts, and shellfish. ...Read more

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Why can't I take benadryl (diphenhydramine) 3 days before an allergy test? Is there another option?

Why can't I take benadryl (diphenhydramine) 3 days before an allergy test? Is there another option?

No Antihistamines: Antihistamines (like benadryl, (diphenhydramine) claritin, zyrtec, allegra) interfere with the skin testing performed in clinic to determine what you are allergic to. Your test will not work if you take these close to testing. If nasal allergies are the problem, you can try an over the counter nasal steroid but remember that this take a few days to start improving symptoms. ...Read more

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What to expect for allergy test?

What to expect for allergy test?

Relax: Allergy testing is easy and relatively painless. The most common is skin prick on the back which feels more like a tickle. You will have some itching after to any positives. This is easily treated and only lasts for around 30 min. You will want to make sure you don't take any antihistamines 5 days prior to your visit. ...Read more

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What's involved in an allergy test?

Blood and skin test: Skin test could be done by a plastic applicators or with needles. A drop of an allergen extract is pricked into the skin and, within 15-18 min., a localized hive will emerge if you are allergic to the extract in question. The reaction will subside in 40-60 minutes. The blood test is drawn at a regular lab and takes a few days to come back. Skin test is somewhat more sensitive. ...Read more