Grape IgE

The Grape IgG test is a diagnostic tool designed to measure immunoglobulin G (IgG) antibodies specific to grapes in a patient's blood. IgG antibodies play a key role in the immune system, offering long-term immunity. This test helps identify potential sensitivities or intolerances to grapes, which can be useful for individuals experiencing symptoms after consuming grape products like fruits, juices, and wines. It is not intended to diagnose a full-blown food allergy but provides insights into immunologic sensitization, aiding in dietary planning. The test involves drawing a blood sample, which is processed and analyzed using an enzyme immunoassay (EIA) method. Results are reported in micrograms per milliliter, indicating the presence of IgG antibodies specific to grapes. While the test's clinical utility is not fully established, it can help healthcare providers identify foods contributing to symptoms. Proper interpretation alongside clinical symptoms is essential for effective dietary management.

Price of test:£34

The lowest price from the last 30 days: £34

Awaiting result:

One day

Collect material:

Blood

Prepare:

Learn more

Purpose of the test

The Grape IgG test is a diagnostic tool designed to measure IgG antibodies specific to grapes in a patient's blood. It helps identify potential sensitivities or intolerances to grapes, aiding dietary planning. Key points include:

- Purpose: Identifies grape sensitivities, not full-blown allergies.
- Procedure: Blood sample collected, serum separated, and refrigerated.
- Methodology: Uses enzyme immunoassay for IgG concentration.
- Interpretation: Positive results suggest sensitization, not definitive allergy.
- Limitations: Requires additional tests for allergy confirmation.
- Turnaround: Results in 3-7 business days.
- Specimen Stability: Refrigerated for 28 days, frozen for 365 days.
- Conclusion: Guides dietary management, not a standalone diagnostic.

Who Should Get Tested

The Grape IgE test is essential for diagnosing grape allergies by detecting IgE antibodies in the serum. It is crucial for individuals experiencing symptoms like hives, itching, or anaphylaxis after consuming grapes. The test process includes:

- Specimen Collection: Blood sample collection and serum separation.
- Specimen Preparation: Serum aliquoting for testing.
- Testing Method: Fluorescence Enzyme Immunoassay (FEIA) to measure IgE levels.

Results interpretation ranges from negative to very strongly positive, guiding allergy management. This test is vital for confirming grape allergy and planning treatment.

Blood Test Preparation Guidelines

Time of day

It is recommended to schedule your appointment for blood tests in the morning hours between 7:00-10:00.

Fasting

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

Drinking water prior to testing can help with sample collection.

Other factors

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:

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:

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 is crucial for making informed healthcare decisions. The Grape IgG test results are reported in micrograms per milliliter (mcg/mL) and interpreted as follows:

- Positive Result: Indicates the presence of IgG antibodies specific to grapes, suggesting sensitization.
- Not a Diagnosis: A positive result alone does not confirm a food allergy.
- Clinical Context: Results should be considered alongside symptoms and other diagnostic methods.
- Guidance: Helps in dietary planning and management for those with grape sensitivities.

Price of test:£34

The lowest price from the last 30 days: £34

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