Tuna is a saltwater fish. It is a commonly consumed seafood item across the world. Allergy to the tuna fish is a kind of seafood allergy. It is commonly found in the adult population. Skin rash, headaches, sneezing, and asthma make for the typical symptoms of tuna fish allergy. The allergy tuna fish test examines the presence of IgE antibodies in the patient’s blood. This helps the doctors in determining the extent and treatment of the allergy. The test is conducted as a normal blood test and the lab method makes it clear that patient has a tuna fish allergy.