Allergy-Grass-Panel-Confirmatory test is used to find the causes of allergy in patients. Your doctor may advise this test if you are suffering from an allergy or have allergic symptoms. Based on the test, the best treatment can be advised because the trigger for the allergic reaction will be identified. The test measures the amount of antibodies in your body against a specific allergen. The amount of antibodies in blood will be measured. The test screens for at least 10 common triggers. The doctor may advise a blood or a skin test.