Allergy Panel Test Results

Bigger wheals usually indicate a greater degree of sensitivity.

Allergy panel test results.

Despite its capabilities few doctors use the rast blood test to screen for allergies today. In order to determine if you are allergic to a food the ku l of each allergen needs to be compared with its own reference table. Why do i need an allergy blood test. A positive skin test means that you may be allergic to a particular substance.

Simply put it measures your immune system s reaction to a particular food allergen. My allergy symptoms are generally mild. These symptoms often clear up within hours but may last for a. A patch test may take several days or more to produce results.

Allergy tests may result in mild itching redness and swelling of the skin. Both the blood test and the skin prick tests detect food specific ige. A radioallergosorbent rast test measures the level of allergen specific ige antibodies in your blood. This is usually a sign of an allergy.

Allergy blood tests are used to find out if you have an allergy. Another type of allergy blood test called a specific ige test measures the level of ige antibodies in response to individual allergens. The blood test will reveal what exactly you are. A test that claims to be able to diagnose food sensitivities and is commonly available is the food igg test.

Results from any type of allergy test have to be interpreted along with your medical history by a healthcare practitioner who is trained to diagnose allergies specifically. Before you leave your doctor s office you ll know the results of a skin prick test or an intradermal test. Unlike the skin prick test the blood test is not affected by antihistamines and can be performed for people with extensive rashes that prevent using skin tests. One type of test called a total ige test measures the overall number of ige antibodies in your blood.

With the skin tests the result is immediate but the blood test result will take at least several days to arrive. The test result for each allergen is measured in ku l which is the concentration of antibodies to that specific food per liter of blood. Your doctor will have you wait in their office so they can review the results of the test. Your skin should react within 15 20 minutes of your doctor administering a skin prick or allergy injection test.

Test results alone cannot diagnose allergies but rather confirm a diagnosis when circumstances suggest an allergy is likely. Check for wheals and flares 15 20 minutes after you get the allergy skin test.