Preparing for Allergy Skin Testing
Allergy skin testing is the gold standard for identifying exactly what is causing your symptoms. To ensure accurate results, please review the following instructions:
- Avoid applying creams or lotions to your back or arms on the day of testing.
- Wear a top that allows easy access to the upper back and upper arms.
- Stop taking antihistamines 7 days before testing. Failure to do so may result in inaccurate results and require rescheduling of your testing appointment.
- Benadryl may be used up to 3 days before testing.
- Inform your provider about all medications you take, including antidepressants, sleep aids, stomach medications, herbal supplements, and beta-blockers, as some may interfere with test accuracy.
- Asthma inhalers and anti-leukotrienes (e.g., Singulair®, Accolate®) do not need to be stopped.
- If you are feeling ill (e.g., fever, cold, or severe allergy symptoms) on the day of testing, please contact our office to discuss rescheduling.
MEDICATIONS TO AVOID 7 DAYS BEFORE TESTING:
Over-the-counter Medications:
- Allegra (Fexofenadine)
- Zyrtec (Cetirizine)
- Xyzal (Levocetirizine)
- Claritin (Loratadine)
- Alavert (Loratadine)
- Sudafed Sinus/Allergy
- Nyquil
- Tylenol Cold
- PM Medications (Tylenol PM, Sleep Aid)
- Pepcid (Famotidine)
- Tagamet (Cimetidine)
Prescription Medications:
- Clarinex (Desoratidine)
- Phenergan (Promethazine)
- Desyrel (Trazadone) will need to be stopped 7 days before testing
Several antidepressants and mood stabilizers can interfere with testing. Please inform providers if you are on any of these medications.
Nasal Sprays:
- Azelastine
- Astelin
- Astepro
- Pantanase
- Dymista
- Ryaltris
Download a printable PDF version of Diagnosing Allergies and What to Expect
If you have any questions about allergy testing or how to prepare, please call us at (210) 616-0882. We’re here to help make the process comfortable and informative.