Allergen - CRAB by EIA, Serum

Allergen - Crab by EIA, Serum

Test Overview

The Allergen - Crab by EIA, Serum test measures the presence of specific IgE antibodies against crab proteins in the blood. It helps identify whether an individual has a sensitization or allergic reaction to crab, a common shellfish allergen.

Why is this Test Done?

This test may be recommended if you experience allergic symptoms after consuming crab or foods containing crab, such as:

• Skin rashes, hives, or itching
• Swelling of the lips, tongue, face, or throat
• Nasal congestion, sneezing, or runny nose
• Wheezing, coughing, or shortness of breath
• Nausea, vomiting, abdominal pain, or diarrhea
• Severe allergic reactions (anaphylaxis)

Sample Required

• Sample Type: Serum
• Method: Enzyme Immunoassay (EIA)

Preparation

• No special fasting or preparation is generally required.
• Inform your healthcare provider about any allergy medications or ongoing treatments.

Understanding the Results

• Negative/Low IgE: Indicates a low likelihood of sensitization to crab.
• Positive/Elevated IgE: Suggests sensitization to crab allergens and may correlate with allergic symptoms.
• Results should always be interpreted along with clinical history and other allergy evaluations.

Who Should Consider This Test?

• Individuals with suspected shellfish allergies.
• People who develop allergic symptoms after eating crab.
• Patients undergoing allergy assessment or monitoring.

Clinical Significance

Crab allergy is one of the most common shellfish allergies and can persist throughout life. Identifying crab-specific IgE antibodies helps healthcare providers recommend appropriate dietary precautions and allergy management strategies.