An Allergist administers allergy tests starting with IgE skin tests. This test is relatively painless. A very small amount of an allergen is put in your skin by making a small prick on the surface of your skin. If you have allergies the area will swell and look and feel like a mosquito bite. The other test involves drawing blood. These allergy blood tests detect and measure the amount of allergen-specific antibodies in your blood. These tests usually screen for the 10 most common allergy triggers including; pet dander, grasses, dust, trees, weeds and molds. A positive result means allergy-specific antibodies were detected in your blood. This usually is a sign of an allergy. A negative result means you probably do not have an allergy.