Shellfish Allergy Test - Crab, Shrimp, Clam, Lobster in Texas

What this test is

This test measures specific IgE antibodies in the blood to determine if you have an allergy to certain shellfish. It focuses on four common types: shrimp, crab, lobster, and clams. The presence of these antibodies may suggest an allergic reaction to these shellfish.

What it measures

• IgE antibodies to shrimp — reflects potential allergic reaction to shrimp
• IgE antibodies to crab — reflects potential allergic reaction to crab
• IgE antibodies to lobster — reflects potential allergic reaction to lobster
• IgE antibodies to clams — reflects potential allergic reaction to clams

What the test involves

The test involves a standard blood draw, where a healthcare professional collects a sample from a vein in your arm. This sample is then analyzed in a laboratory to detect specific IgE antibodies.

Why it is often ordered

Clinicians typically order this test if there are symptoms suggestive of a shellfish allergy, such as hives, swelling, or difficulty breathing after eating shellfish. It helps to identify specific shellfish that might be causing allergic reactions.

Preparation

Preparation instructions should be followed as provided by the collection lab. It's important to adhere to any guidelines to ensure accurate results.

How results are reported

Results indicate the presence and level of specific IgE antibodies to each type of shellfish tested. Reference ranges for these antibodies can vary by laboratory.

Before you go

• Sample collection procedure
• Specific preparation instructions
• Expected result timeline