Lettuce IgE

The Lettuce IgG test is a laboratory examination that measures immunoglobulin G (IgG) antibodies against lettuce in a patient's serum, indicating an immune response to this food. A blood sample is required, collected in a red-top or serum gel tube, and processed to obtain serum. The serum is stable for up to 28 days refrigerated or 365 days frozen. The test uses a Fluorescent Enzyme Immunoassay (FEIA) method, providing standardized results. Clinically, it helps identify adverse reactions to lettuce, such as gastrointestinal symptoms or skin rashes, but does not confirm a food allergy. Results are reported in micrograms per milliliter, with values under 2.0 mcg/mL considered absent. The test's turnaround time is 3 to 7 business days. Cross-reactivity with other antigens can occur, necessitating careful interpretation. The test aids in developing dietary plans but should be supervised by healthcare professionals to avoid nutritional deficiencies. It is a Laboratory Developed Test (LDT) performed in CLIA-certified labs.

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 Lettuce IgG test is designed to detect IgG antibodies against lettuce, indicating an immune response. Key points include:

- Specimen Requirements: Blood sample in red-top or serum gel tube; 0.5 mL serum needed.
- Specimen Stability: Refrigerate for 28 days; freeze for 365 days; ambient for 7 days.
- Methodology: Uses Fluorescent Enzyme Immunoassay (FEIA) for standardized results.
- Clinical Utility: Identifies potential adverse reactions to lettuce.
- Interpretation: Values <2.0 mcg/mL are undetectable; higher suggests immune response.
- Turnaround Time: 3 to 7 business days.
- Cross-Reactions: Possible with other antigens; interpret with clinical context.

Who Should Get Tested

The Lettuce IgE test is essential for diagnosing lettuce allergies. It measures IgE antibodies in serum to confirm sensitization and identify allergens. Key utilities include:

- Diagnosing allergies by detecting specific IgE antibodies.
- Identifying allergens responsible for symptoms.
- Confirming sensitization before immunotherapy.
- Investigating specificity of allergic reactions.

The test uses Fluorescence Enzyme Immunoassay (FEIA) and requires a serum sample. Results are categorized from negative to extremely high positive, indicating allergy likelihood. Clinical context is crucial for interpretation, and reports are available within 1-3 days.

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 health decisions. The Lettuce IgG test results are reported in micrograms per milliliter (mcg/mL). Here's how to interpret them:

- < 2.0 mcg/mL: Absent or undetectable levels of allergen-specific IgG antibodies.
- ≥ 2.0 mcg/mL: Indicates a potential immune response to lettuce.

It's important to note:

- A positive result suggests sensitization, not a confirmed allergy.
- Cross-reactivity with other antigens may occur.
- Consult healthcare professionals for personalized dietary advice and further evaluation.

Price of test:£34

The lowest price from the last 30 days: £34

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