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Testing & Immunotherapy FAQs

Testing and Injection

Aeroallergen skin testing is done using the prick and intradermal methods. There is no blood work done in our office. These methods are used by board-certified allergists and are accepted as the standard method for the diagnosis of allergic disease. Skin testing is not painful, and is the most common and effective method available.
You can receive approximately 55 common inhalant skin tests, depending on the history of your allergy symptoms. These allergens include pollens, pet dander, molds and dust mites. Occasionally, skin tests for common food allergens will also be included. Should your prick skin test be negative, we might also perform intradermal skin tests to be sure that important allergen sensitivities are not missed.
IMPORTANT: Certain medications must be stopped prior to allergy skin test. Please do not take medicines that contain antihistamines for approximately five days prior to testing.
Common antihistamines include:
Zyrtec, Clarinex, Atarax, Benadryl, Xyzal, Alavert, Claritin and Allegra.
Common generic antihistamines include:
Cetirizine, Diphenhydramine, Fexofenadine, Levocetirizine, Loratadine, Hydroxyzine and Desloratadine.
Most frequently-used antihistamines:
Benedryl, Advil PM, Tylenol PM and NyQuil.
You should continue to take (as prescribed) the following medications:
Antibiotics, asthma medications, oral steroids, decongestants and all non-allergy medications.
The testing procedure can take anywhere from 15 to 30 minutes.

Office Injection Hours

office injection hours
Monday, Tuesday, Wednesday, Thursday & Friday: 7:45 a.m.-12:30 p.m.
Monday, Tuesday, Wednesday & Friday: 2 p.m.-5 p.m.
Thursday afternoon: There are no injection times available (office is closed).
*Patients who receive injections twice a week must have two full days in between injections, therefore, the schedule is: Monday and Thursday, Tuesday and Friday, or Monday and Friday.
*Patients who receive injections once a week or once every other week may come any day of the week that is convenient for them. With any questions regarding allergy injection hours, please feel free to call the office.
Allergy injections are a treatment plan the patient and the doctor work together to agree upon that will assist in allergy relief. The injections are treatments called immunotherapy that help build up immunity to your specific allergies. Treatment can run five to six years, and can initially take anywhere from six months to a year to take effect. Allergen immunotherapy is the repeated administration of allergen vaccines to allergic individuals in order to provide long-term relief of symptoms and improving the quality of life during subsequent natural allergen exposure.
Immunotherapy is effective in allergic rhinoconjunctivitis and allergic asthma, and in patients who develop systemic anaphylactic reactions to fire ants. All patients should be observed in the clinic for at least 15 minutes following injections. In view of the remote risk of serious systemic side effects, the risk/benefit ratio should be carefully considered in all cases.
Long-Term Benefits
Allergen immunotherapy has been proven, in several studies, to confirm long-term benefits following discontinuation. For example, immunotherapy can reduce the onset of new allergen sensitivities in children. In a prospective randomized, controlled trial of pollen immunotherapy in children with seasonal allergic rhinitis, development of asthma was followed over a period of five years. Two years following cessation of immunotherapy, there was a marked reduction in the risk of development of physician-diagnosed asthma (odds ratio 2.7 95% confidence intervals 1.3-5.6), compared to controls (10). Taken together, these studies emphasize the important prophylactic value of injection immunotherapy, which is in contrast to pharmacotherapy, where relapse of symptoms occurs immediately following.
Dr. Joseph Pflanzer, M.D.
Dr. Joseph Pflanzer, MD
2801 Bolton Boone Drive, Suite 101
DeSoto, TX 75115

Phone: 972-298-6677
Business Hours:
Monday-Wednesday and Friday:
7:45 a.m. - 12:30 p.m.
2:00 p.m. - 5:15 p.m.
Thursday: 7:45 a.m. - 12:30 p.m.