8 doctors weighed in:
How is an allergy skin test usually done?
8 doctors weighed in

Dr. HENRY LEGERE
Internal Medicine - Allergy & Immunology
2 doctors agree
In brief: Prick testing
In an allergist's office, testing is started using a plastic prick (scratch) device.
A small volume of the purified allergen is gently pricked on to the skin surface, usually the forearm or the back, with very little pain although it can be very itchy. If prick testing is negative, sometimes intradermal testing is done with small needles.

In brief: Prick testing
In an allergist's office, testing is started using a plastic prick (scratch) device.
A small volume of the purified allergen is gently pricked on to the skin surface, usually the forearm or the back, with very little pain although it can be very itchy. If prick testing is negative, sometimes intradermal testing is done with small needles.
Dr. HENRY LEGERE
Dr. HENRY LEGERE
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Dr. Efren Rael
Internal Medicine - Allergy & Immunology
1 doctor agrees
In brief: Allergy skin testing
In the U.S., after antihistamine avoidance, 2 methods are often used--the prick/puncture (SPT) 1st, and sometimes the intradermal (IDT) 2nd.
SPT involves allergen application to the forearm or back, along with a + and negative control, waiting 15-20 minutes and assessing for a bump and/or area of redness to determine if immune response occurs. IDT is similar but, placed below the epidermis.

In brief: Allergy skin testing
In the U.S., after antihistamine avoidance, 2 methods are often used--the prick/puncture (SPT) 1st, and sometimes the intradermal (IDT) 2nd.
SPT involves allergen application to the forearm or back, along with a + and negative control, waiting 15-20 minutes and assessing for a bump and/or area of redness to determine if immune response occurs. IDT is similar but, placed below the epidermis.
Dr. Efren Rael
Dr. Efren Rael
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Dr. Tsu-Yi Chuang
Dermatology
1 doctor agrees
In brief: Patch or prick
Dermatologists using patch tests on back.
Allergists using intradermal injections, usually through arms.

In brief: Patch or prick
Dermatologists using patch tests on back.
Allergists using intradermal injections, usually through arms.
Dr. Tsu-Yi Chuang
Dr. Tsu-Yi Chuang
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Dr. Neil Baman
Internal Medicine - Allergy & Immunology
In brief: By an Allergist
After consulting with an allergist, he or she will perform skin prick testing by placing a purified allergen extract on the forearms or back and pricking/scratching it.
If the patient is allergic to that exact allergen, redness, itchiness and a small hive will appear. Sometimes, intradermal testing is then performed by placing a slightly larger amount under the skin to help determine allergies.

In brief: By an Allergist
After consulting with an allergist, he or she will perform skin prick testing by placing a purified allergen extract on the forearms or back and pricking/scratching it.
If the patient is allergic to that exact allergen, redness, itchiness and a small hive will appear. Sometimes, intradermal testing is then performed by placing a slightly larger amount under the skin to help determine allergies.
Dr. Neil Baman
Dr. Neil Baman
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