Crayfish IgE

The Crayfish IgG test is a specialized laboratory examination aimed at detecting immunoglobulin G (IgG) antibodies specific to crayfish in a patient's serum. IgG antibodies are integral to the immune system, providing long-term immunity. The presence of these antibodies suggests sensitization to crayfish but does not confirm an allergy. The test is primarily used to diagnose and manage potential allergic reactions to crayfish, which can range from mild symptoms like hives to severe reactions such as anaphylaxis. Utilizing an enzyme immunoassay (EIA) technique, the test quantifies IgG levels, reported in micrograms per milliliter, to assess the intensity of the immune response. While the test offers insights into immunologic sensitization, it should not be the sole diagnostic tool for food allergies. Results must be interpreted alongside clinical evaluations and other diagnostic methods. Physicians should oversee the test to ensure accurate interpretation and integration into the patient's management plan.

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Price of test:£34

The lowest price from the last 30 days: £34

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Awaiting result:

One day

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Collect material:

Blood

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Prepare:

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Purpose of the test

The Crayfish IgG test measures IgG antibodies specific to crayfish in serum, aiding in diagnosing potential allergic reactions. It uses enzyme immunoassay (EIA) to quantify IgG levels, with results categorized by concentration. Key points include:

- Purpose: Identifies immune response to crayfish, relevant for those with seafood reactions.
- Methodology: Involves blood collection, serum preparation, and EIA.
- Result Interpretation: Ranges from negative to extremely high.
- Limitations: Not a standalone diagnostic tool; requires clinical context.
- Specimen Handling: Serum stability varies by storage condition.
- Turnaround: Typically 2-4 days.

Who Should Get Tested

The Crayfish IgE test is essential for diagnosing crayfish allergies, which can cause reactions from mild to severe. Key points include:

- Purpose: Identifies specific allergens causing symptoms, aiding in allergy management.
- Methodology: Uses Fluorescence Enzyme Immunoassay (FEIA) to detect IgE antibodies.
- Specimen Requirements: Serum preferred; specific volumes needed based on allergens tested.
- Stability: Serum stable for 14 days refrigerated, 90 days frozen.
- Interpretation: IgE levels classified from negative to extremely high, indicating allergy likelihood.

This test supports accurate diagnosis and treatment planning for crayfish allergies.

Blood Test Preparation Guidelines
Time of day
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It is recommended to schedule your appointment for blood tests in the morning hours between 7:00-10:00.
Fasting
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It is recommended to fast for approximately 12 hours before blood sampling. The last meal of the previous day should ideally be consumed around 6:00 p.m. On the day before the test, avoid heavy and fatty meals as well as alcohol.
Stay hydrated
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Drinking water prior to testing can help with sample collection.
Other factors
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Tests should not be performed after a sleepless night or intense physical activity. It is recommended to avoid exercise and stress immediately before blood collection and to not smoke. A short rest is recommended.
Medications and supplements:
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Blood samples should be collected before the morning dose. Some drugs can interfere with test results. Consult with your doctor whether you can delay your dose because of lab tests.
Biotin supplements:
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High doses of biotin supplements can affect test results, causing false elevation or reduction. It's recommended to avoid taking biotin for at least 72 hours before blood collection. If you are taking biotin, inform the personnel collecting the blood so that they can provide specific instructions.
Interpreting Test Results

Understanding test results for the Crayfish IgG test involves several key points:

- Purpose: Identifies potential allergic reactions to crayfish by detecting IgG antibodies.
- Methodology: Utilizes enzyme immunoassay to measure IgG levels in serum.
- Result Interpretation:
- Negative: <0.10 mcg/mL
- Positive: 0.70-3.49 mcg/mL
- Extremely High: ≥100 mcg/mL
- Clinical Utility: Indicates sensitization, not a definitive allergy.
- Limitations: Should be used alongside other diagnostic methods.
- Physician Oversight: Essential for accurate interpretation and management.

Price of test:£34

The lowest price from the last 30 days: £34

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