Crayfish Allergy IgE Blood Test

What is the purpose of this test?

Order this Crayfish Allergy IgE Blood Test, which measures the IgE antibody levels in the blood to detect an allergy to crayfish. Crayfish is a popular food due to its great taste and nutritional value. It is a good source of protein, low in fat, and has few calories. However, as more people eat crayfish, there has been an increase in allergic reactions. This freshwater shellfish is widely enjoyed in China, Japan, and North America, where seafood is common. The Cambaridae family includes the red swamp crayfish, also called Procambarus clarkii, found in northern Mexico and the southern United States. China and the United States are the primary sources of fresh, frozen, or processed food containing red swamp crayfish, which can be eaten raw or cooked. 

When should I order a Crayfish Allergy IgE Blood Test?

Individuals may order this Crayfish Allergy Blood Test if they have experienced symptoms related to a crayfish allergy. Allergy symptoms vary depending on the individual, ranging from mild to severe reactions. Most food-related symptoms occur within two hours of ingestion but frequently begin within minutes. In addition, the response can be delayed by four to six hours or even longer in some rare cases.

An allergic reaction may affect the skin, intestinal lining, and air pathways. Individuals with a crayfish allergy may experience one or more of the following symptoms:

• Tingling sensation near or around the mouth
• Swelling
• Abdominal discomfort
• Nausea or vomiting
• Diarrhea
• Itching or hives
• Congestion
• Difficulty breathing, swallowing, or wheezing
• Lightheadedness

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

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