Blueberry Allergy IgE Blood Test

What is the purpose of this test?

Order this Blueberry Allergy test to measure the IgE antibody levels in a blood sample to detect a food sensitivity to blueberries. Blueberries are perennial flowering plants with blue or purple berries belonging to the Ericaceae (Heath) family. Other plants in the Heath family include cranberries and huckleberries. Blueberries are a staple seasonal fruit harvested globally, especially in Canada, New England, Great Britain, and New Zealand. Blueberries are a rich source of fiber, vitamins (C & K), and antioxidants. Due to their tart yet sweet taste, blueberries are an essential ingredient in many food products, including:

• Beverages
• Frozen desserts
• Smoothies
• Prepackaged fruit cups
• Jams and preserves
• Fruit salads
• Yogurts
• Alcoholic and non-alcoholic cocktails
• Candies and desserts

What causes an allergy to blueberries?

Although a blueberry allergy is rare, some individuals may be sensitive to specific proteins found in blueberries. In addition, due to cross-reactivity, individuals may experience an adverse reaction to blueberries if they have an allergy to other plants in the heath family. For example, after eating blueberries, an individual's immune system triggers an allergic reaction to blueberries. The body views certain substances (proteins) as toxic and produces IgE antibodies to combat these contaminants. These antibodies cause histamine to be released, which triggers allergic reaction symptoms.  

When should I order a Blueberry Allergy IgE Blood Test?

Individuals may order this test if they have experienced symptoms related to a blueberry allergy. Allergy symptoms vary from one individual to the next ranging from mild to severe reactions, which can occur within minutes to a few hours after exposure. Common symptoms of a blueberry allergy may include one or more of the following:

• Hives or rash
• Itching
• Headache
• Coughing or wheezing
• Nausea
• Diarrhea
• Vomiting
• Stomach pain
• Swelling of the face, lips, or throat
• Tingling sensation in the mouth
• Trouble breathing

A severe, possibly life-threatening allergic reaction known as anaphylaxis may occur in some cases. An anaphylactic response requires immediate medical attention. Signs or symptoms of anaphylaxis may include:

• Rapid or increased pulse
• Swollen throat or lump making it difficult to breathe
• Low blood pressure
• Extreme dizziness or loss of consciousness