Allergy skin testing is used to detect allergies to inhaled allergens (like pollen, animal dander, dust etc.), foods, certain insect stings and some medications. The test involves introducing very small amount of allergens into the skin and observing for positive reactions 15-20 minutes later. The procedure for skin testing is called scratch or prick testing. A scratch/prick device, with a drop of the allergen on it, is used to prick the skin on your back/arm/forearm. In case of inhaled allergens, if you test negative to particular allergens, a second procedure MAY be performed. The second procedure is called intra-dermal testing and involves injecting a tiny amount of the allergen into the superficial layer of the skin on your arms. Each procedure takes about 30 minutes to complete. The information obtained from allergy skin testing will provide guidance for avoidance of allergens. It may also be used to formulate allergy shot extracts for the treatment of hay fever, asthma and/or insect sting allergies.
Please review the following instructions to make your allergy testing visit as efficient as possible —
DISCONTINUE 10-14 DAYS PRIOR (* - Do NOT discontinue w/o first consulting with the prescribing physician)
Doxepin (Zonalon, Silenor)*
Hydroxyzine (Vistaril, Atarax)
* Do not discontinue without first consulting with the prescribing physician
DISCONTINUE 5-7 DAYS PRIOR
Azelastine (Astelin, Astepro, Optivar)
Brompheniramine (Dimetapp, Bromfed)
Chlorpheniramine (Many prescription and OTC medications, for e.g., ChlorTrimeton, Tussionex
Carbinoxamine (Palgic, Arbinoxa)
Diphenhydramine (Benadryl, Triaminic, Pediacare and many other OTC medications
Doxylamine (Unisom & other sleep aids)
Ketotifen (Alaway, other eye drops)
Meclizine (Antivert, Bonine, Verticalm and other OTC motion sickness medications
Olopatadine (Patanase, Patanol, Pataday)
Pheniramine (Visine-A, other eye drops)
OTC medications with anti-histamines
DISCONTINUE 24 HOURS PRIOR
DO NOT DISCONTINUE Asthma inhalers (for e.g., Advair, Flovent, Symbicort etc.), steroid nasal sprays (for e.g., Flonase, Nasonex, Veramyst, etc.) and medications for other chronic medical conditions.
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