Medical Health Encyclopedia

Injury Disease Nutrition Poison Symptoms Surgery Test Special Topic

1 2 5 A B C D E F G H I J K L M N O P Q R S T U V W X

RAST test Allergy skin prick or scratch test Intradermal allergy test reactions Skin testing, PPD (R arm) and Candida (L)

Overview Risks Results

Allergy testing

Alternative Names: Patch tests - allergy; Scratch tests - allergy; Skin tests - allergy; RAST test Normal Values: In a nonallergic person, allergy tests should be negative (no response to the allergen). What abnormal results mean: Text Continues Below Most often, a positive test indicates an allergy to the substance in question. The skin tests are most reliable when testing for airborne substances (such as animal dander or pollen). However, if the dose of allergen is excessive, a positive reaction will occur even in persons who are not allergic. Additional conditions under which the test may be performed: Allergic rhinitis Allergy to mold, dander, dust Angioedema Contact dermatitis Nasal obstruction

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org). The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. Copyright 2004 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.