Clam IgG

The Clam IgG test is a diagnostic tool designed to measure immunoglobulin G (IgG) antibodies specific to clam allergens in a patient's serum. It is primarily used to assess immunologic sensitization to clam allergens, which may be relevant in cases of food-related complaints or suspected food allergies. However, the presence of IgG antibodies alone does not confirm a food allergy, as it only indicates sensitization. The test is typically performed using an enzyme immunoassay (EIA) method, requiring a serum sample collected in a serum separator tube. Proper specimen handling is crucial, with stability maintained for up to 48 hours at ambient temperature, 2 weeks refrigerated, or 1 year frozen. Results are generally available within 2 to 4 business days and are reported in micrograms per milliliter (mcg/mL). Physicians should interpret the results in conjunction with other diagnostic tools and clinical evaluations to confirm food allergies, considering the test's limitations.

Price of test:£39

The lowest price from the last 30 days: £39

Awaiting result:

12 hours

Collect material:

Blood

Prepare:

Learn more

Purpose of the test

The Clam IgG test measures IgG antibodies specific to clam allergens in serum, aiding in assessing immunologic sensitization. Key points include:

- Clinical Utility: Not fully established; useful in specific cases for diet evaluation.
- Procedure: Conducted via enzyme immunoassay (EIA) with standardized calibrators.
- Specimen Requirements: Serum in SST, 0.2 mL minimum, refrigerated.
- Specimen Stability: Ambient for 48 hours, refrigerated for 2 weeks, frozen for 1 year.
- Turnaround Time: 2-4 business days.
- Interpretation: Values <2.0 mcg/mL indicate absent IgG; higher values suggest sensitization.
- Diagnostic Considerations: Use with other tools; positive results need further evaluation.

Who Should Get Tested

The Clam IgG test is a diagnostic tool used to assess immunologic sensitization to clam allergens. It is particularly useful in evaluating food-related complaints or suspected food allergies. However, the presence of IgG antibodies does not confirm a food allergy. Physicians should order this test, understanding its limitations and interpreting results appropriately. Key considerations include:

- Specimen Requirements: Serum sample, preferably 0.5 mL, refrigerated for stability.
- Turnaround Time: 2 to 4 business days.
- Interpretation: Values <2.0 mcg/mL indicate absent allergen-specific IgG antibodies. Higher values suggest sensitization.

This test should be used alongside other diagnostic tools for comprehensive evaluation.

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 effective diagnosis and management. The Clam IgG test measures specific IgG antibodies to clam allergens, indicating potential sensitization. Key points to consider:

- Clinical Utility: Not fully established; used in special cases for diet evaluation.
- Procedure: Conducted via enzyme immunoassay, ensuring standardized results.
- Specimen Requirements: Serum sample, preferably 0.5 mL, refrigerated for stability.
- Turnaround Time: Typically 2-4 business days.
- Interpretation: Values <2.0 mcg/mL suggest undetectable levels; higher values indicate sensitization.
- Diagnostic Considerations: Use alongside other tools for comprehensive evaluation.

Price of test:£39

The lowest price from the last 30 days: £39

AI-Powered Insights and Expert Validation

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