This test measures the IgE antibody levels in a blood sample to detect an allergy to grapes. Grapes are a fruit of the Vitaceae family with various species and origins in the Mediterranean. Grapes are a popular fruit crop grown globally in countries such as China, Italy, and the United States. While countries such as France, Italy, and Spain are major global producers of wines. Grapes are rich in fiber, potassium, and a range of vitamins and other minerals. Due to its many health benefits, grapes are an essential ingredient in many food products, including:
- Currants
- Dried Currants
- Grape Juice
- Grape Leaves (Dolmades)
- Grapeseed Oil
- Raisins
- Red Wine Vinegar and other kinds of vinegar
- Wine
A grape allergy is uncommon; however, hypersensitive people who ingest grapes or grape-based products may experience mild to moderate allergic symptoms. The key allergen in grapes is a lipid transfer protein (LTP) called Vit v 1. This allergen activates an unnecessary response in an individual's immune system. As a result, the body views this allergen as harmful and produces IgE antibodies to combat the invader. Unfortunately, these antibodies cause histamine to be released, which causes an allergic reaction.
An allergic reaction may range from mild or moderate to severe and vary for each individual. An individual may experience allergic reaction minutes to a few hours after exposure to an allergen. An individual allergic to grapes may experience the following symptoms:
- Tingling sensation in or around the mouth
- Swelling
- Abdominal pain
- Nausea or vomiting
- Diarrhea
- Itching, hives, or eczema
- Congestion
- Trouble breathing or wheezing
- Lightheadedness
An extreme, life-threatening allergic reaction known as an anaphylactic shock can occur in the most severe cases. An anaphylactic response requires immediate medical attention. Signs of an anaphylactic shock include:
- Rapid or increased pulse
- Swollen throat or lump making it difficult to breathe
- Low blood pressure
- Extreme dizziness or loss of consciousness
Test Code(s):
602802, 2675
Preparation:
No special preparation is required.
Test Results:
2-5 days. May take longer based on weather, holiday, or lab delays.
