Preparation for Allergy Skin Testing
As part of your allergy consultation, allergy skin testing maybe indicated. The interpretation of these tests can be adversely affected by use of antihistamine medications and those medications with antihistaminic activity.
To best ensure a high quality allergy skin test, it is necessary to avoid the following medications as listed below:
Please discontinue the following medications, as well as any over-the counter allergy & sinus medications for at least 5 days prior to your visit:
- Alavert (Loratidine)
- Alaway (Ketotifen)
- Allegra (Fexofenadine)
- Astepro (Azelastine)
- Atarax (Hydroxyzine)
- Clarinex (Desloratidine)
- Claritin (Loratidine)
- Dimetapp (Brompheniramine)
- Dymista (Azelastine + Fluticasone)
- Nyquil (Doxylamine)
- Optivar (Azelastine)
- Patanase (Olopatadine)
- Tavist (Clemastine)
- Vistaril (Hydroxyzine)
- Xyzal (Levocetirizine)
- Zaditor (Ketotifen)
- Zyrtec (Cetirizine)
- Zyrtec Itchy Eyes (Ketotifen)
Please discontinue the following medications for at least 2 days prior to your visit:
- Axid (Nizatidine)
- Benadryl (Diphenhydramine)
- Pepcid (Famotidine)
- Tagamet (Cimetidine)
- Zantac (Ranitidine)
The application of topical steroids to the forearms and back should be avoided for at least 2-3 weeks prior to your visit.
Medications such as benzodiazepines, tricyclic antidepressants, as well as other antidepressants may suppress responses to skin testing. If you are on these medications, please contact the prescribing physician and inquire if these medications can be safely stopped.
You can continue to take inhaled, nasal, and oral steroids without interfering with allergy skin testing.
Allergy skin tests are generally safe, but rarely life-threatening allergic reactions may occur. Symptoms of such reactions can include hives, swelling, breathing troubles, and low blood pressure.
Due to this risk, it is important that you let us know if you have a history of anaphylaxis, unstable asthma, are pregnant, and/or are on beta blockers, ACE inhibitors, or MAO inhibitors. Having these conditions, being pregnant, or being on these medications may makea rare allergic reaction to skin testing more severe and/or more difficult to treat.