SKIN TESTING

Allergy skin tests serve as an aid in identifying the causative agents in allergy symptoms. The tests are divided into two parts, scratch and intradermal. The first part involves tiny pricks which contain the allergen extract. Positive reactions are identified by local swelling and redness after 15 - 20 minutes. Itching may also occur. The second part involves intradermal injections on the forearm. A small needle is used to inject the extracts under the top layer of the skin. It is necessary to wait 15 - 20 minutes before the test results can be read.

A number of allergens are tested: pollens, molds, animals, dust mites and other allergens as determined by the doctor. After the tests are completed, the doctor will discuss the results and various treatment options.

IMPORTANT

DO NOT TAKE ANTIHISTAMINES FOR 72 HOURS BEFORE THE SKIN TESTS.

Many medications contain antihistamines or other chemicals that may block the action of histamine, which is necessary to produce a positive skin test reaction in an allergic person. These medications can interfere with the results of allergy skin tests. Some common medications that contain antihistamines or chemicals that can interfere are listed below. Consult your doctor or nurse if you have any questions regarding your medication prior to your skin test.

Antidepressants, tranquilizers, and beta-blockers can also affect allergy test results. Please let the doctor or nurse know if you are taking any of these medications.