Allergy Testing your Doctor Recommends

Your doctor may recommend a variety of allergy testing to diagnose your condition if you suspect you may have an allergy, but are uncertain as to the allergen causing your malady.

A variety of allergens can be identified using these various tests. Since some tests will work better than others; it is a good idea to be familiar with the different methods of allergy testing available to you. Basically, the tests can fall into three categories: Scratch tests, elimination tests, and blood tests.

Scratch Tests

Scratch tests are the most common type of allergy test that are done. This test consists of placing a small amount of the suspected allergen onto the surface of the skin, then scratching or pricking the area to allow penetration of the substance.

Swelling, redness, or itching are signs that an allergic reaction has occurred. A result can often be detected in as little as twenty minutes using this type of testing. The other advantage to this kind of test is that many different allergens can be tested together. This makes this method especially useful if the allergen is unknown, airborne, or a food allergy.

Elimination Diets

If a food allergy is suspected, the elimination diet may be performed. A variety of foods that are potential allergens are eliminated form the diet for several weeks. Each food is then gradually added back to the person’s diet, with attention being mad to see which of the selections of food is causing the allergy symptoms to return.

This method of allergy testing works best with mild allergic reactions. However, it can pose a potential danger to patients who have severe, anaphylactic allergies. If there is a severe allergy suspected, a third method of allergy testing is preferred to ensure the safety of the patient. Thus, a life-threatening substance is not placed into the system of the allergy sufferer.

Blood Tests

The third type of allergy testing is the blood test, commonly called the RAST test. This is done by using blood drawn from the patient in the laboratory. The blood is then examined to determine the presence of immunoglobulin antibodies, hence; these will indicate whether the immune system is producing an allergic reaction in the body. Levels of Ige’s that are elevated can tell your doctor what you are allergic to and make certain the types of allergens affecting your system. Should your doctor decide these tests will benefit you, he will check out your medical history and thus ensure the results are accurate.