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Doctor insights on: Scratch Test Allergies

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Is the scratch test for environmental allergies accurate and useful?

Is the scratch test for environmental allergies accurate and useful?

Incredibly: Skin prick testing is the most accurate way to test for environmental allergies. Blood testing is the 2nd most accurate although a far cry from skin testing. All other non-approved forms of testing............Well, i simply state, "let the buyer beware!" there is a reason insurance doesn't cover the non-approved methods... ...Read more

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Dr. John Chiu
2,573 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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How accurate is an allergy scratch test?

How accurate is an allergy scratch test?

Allergy skin test: Allergy skin tests in the hands of a trained allergist are very helpful in determining the most likely causes of allergy symptoms. No test is perfect, and sometimes allergy tests can miss allergies and sometimes they can cause them to be overdiagnosed. That's why you need a doctor to take your history and interpret the test together with all the information about your symptoms and activities. ...Read more

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What exactly is an allergy scratch test?

What exactly is an allergy scratch test?

Best allergy test: Scratch or prick skin testing is the primary skin test method used by allergists. A drop of the material in question is put on the surface of the skin and a small pointed device is used to prick the skin surface exposing a very small amount of the material (antigen) to the subject. If the person has sufficient numbers of sensitive mast cell a hive appears due to histamine released = positive test. ...Read more

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How long does a allergy scratch test take?

How long does a allergy scratch test take?

1 sec and 20 min: Putting on the test takes 1 or 2 seconds. You then wait 20 minutes to have the tests read. ...Read more

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What is an allergy scratch test for?

Tests for allergies: Allergy scratch tests are used to assess whether or not you are allergic to pollen, mold, pets, dust mites, insects, foods, etc... ...Read more

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Does an allergy scratch test test for mold and dust allergies?

Does an allergy scratch test test for mold and dust allergies?

Yes: Skin allergy testing can check for number of allergens. These include environmental and food allergens. ...Read more

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2 days ago got tested for allergies (scratch test) only spots w/reaction were histamine+mold. Now there are red spots (not the pricks) itchy, causes?

2 days ago got tested for allergies (scratch test) only spots w/reaction were histamine+mold. Now there are red spots (not the pricks) itchy, causes?

ST reaction: The skin test response to allergen may start within minutes followed by a delayed response from 2-8 hrs later. The delayed reaction may linger for a few days. However the reaction consists usually of a raised wheal and not just redness. Are your red spots raised or flat? ...Read more

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What is an allergy skin prick or scratch test?

What is an allergy skin prick or scratch test?

Allergy test: An allergist will introduce small amounts of specific antigens or substances that can cause allergy through a small needle into the skin. The allergist then looks for a reaction. Typically multiple allergy tests are performed in the same session. ...Read more

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What is a 'scratch test' for?

Allergies: This is done in the office by an allergist with very specially prepared dilute solutions of things that you may be allergic to in order to determine environmental allergies. ...Read more

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Has anyone here got a scratch test infection?

Never seen one: In private practice for ten years. The testing area should be cleaned thoroughly before testing. ...Read more

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How long should the bumps and itching last after a scratch test?

How long should the bumps and itching last after a scratch test?

Minutes to hours: Depending on the degree of sensitivity, if really bothersome call your doctor, can try OTC hydrocortisone cream 1% topically /antihistamine like cetirizine, good luck ...Read more

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How is a scratch test done?

Scratch test: A drop of cocentrated allergic testing material is applied to the skin . Then an instrument called a scarifier is used to remove an outer portion of skin without causing bleeding to help the material get under the skin better so that it can be read by the allergist. ...Read more

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What is the point of the scratch test?

What is the point of the scratch test?

Scratch Test: (medicine) med a skin test to determine allergic sensitivity to various substances by placing the allergen to be tested over an area of lightly scratched skin. A positive reaction is typically indicated by the formation of a weal. ...Read more

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What is a scratch test and what are the risks?

Tests for allergy!: Scratch tests are used for detecting allergens for a particular patient. When we say that you are allergic to penicillin, we mean that your immune system makes an antibody called ige antibody against penicillin, which can result in a reaction. When we do a scratch test, we apply the possible allergens on the skin with a scratch. If you are allergic to that item, it will show a local itchy reaction. ...Read more

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How can I find out what i'm allergic to without a scratch test?

Blood test: Allergy can the cause of allergic symptoms can be uncovered through skin testing or blood testing. Each has distinct advantages and disadvantages. ...Read more

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I'm allergic to at food coloring, but I don't know how strongly allergic. Can this be tested without a scratch test?

Your body's clues: Your body has already given you some good clues. What reaction did you have? A mild itchy rash? Lots of hives? You know you're strongly allergic if you've had major hives, and especially if you've noticed swelling in your mouth, trouble swallowing or breathing. Talk with your doc about your reaction & what to do next. ...Read more

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I've been "back scratch" tested for allergies. Can the doctors do a allergy tests for specific types?

See below: The scratch test does test for specific allergies. Blood work can also be requested for allergies. However, most allergist believe the skin testing is more accurate. ...Read more