C.D.T IFCC

The cashew nut IgE test is a vital diagnostic tool for identifying potential allergies to cashew nuts. It measures immunoglobulin E (IgE) antibodies in a patient's serum, indicating an allergic response. The test follows a two-step algorithm: initial testing for total cashew-specific IgE using a fluorescent enzyme immunoassay, and reflex testing for the Ana o 3 allergen if IgE levels are 0.10 kU/L or higher. Serum samples are collected in specific tubes, with a minimum volume of 0.4 mL required. Results are categorized from negative to strongly positive based on IgE concentration, aiding in assessing allergenic response strength. Clinical correlation with patient history is crucial, as positive results suggest sensitization but not definitive allergy. The test has limitations, such as potential false positives in cases of high serum IgE. Understanding cross-reactivity with nuts like pistachios and recognizing symptoms are essential for effective allergy management and avoidance strategies.

Price of test:£105

The lowest price from the last 30 days: £105

Awaiting result:

One day

Collect material:

Blood

Prepare:

Learn more

Purpose of the test

The cashew nut IgE test is a diagnostic tool for evaluating suspected cashew nut allergies by measuring IgE antibodies in the serum. Its objectives include:

- Purpose: Identify IgE antibodies against cashew nuts, indicating potential allergic reactions.
- Testing Algorithm:
- Initial Testing: Detect total IgE using FEIA.
- Reflex Testing: If IgE ≥ 0.10 kU/L, test for Ana o 3 allergen.
- Specimen Requirements: Serum, 0.4-0.6 mL.
- Interpretation:
- Negative: <0.10 kU/L
- Positive: ≥0.70 kU/L
- Clinical Correlation: Align results with patient history.
- Limitations: Not definitive for allergy diagnosis; false positives possible.

Who Should Get Tested

Carbohydrate-deficient transferrin (CDT) testing is essential for identifying chronic and excessive alcohol consumption. This test is particularly useful in clinical and forensic settings due to its high specificity and sensitivity. Key individuals who should be tested include:

- Patients with suspected chronic alcohol misuse
- Individuals in alcohol treatment programs
- Traumatized patients with potential alcohol issues
- Persons involved in forensic cases, such as driver licensing or aviation

CDT testing provides a reliable assessment of sustained alcohol intake, aiding in diagnosis and monitoring.

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 for the cashew nut IgE test is crucial for managing potential allergies. Here's a brief guide:

- Negative: Less than 0.10 kU/L, indicating no significant sensitization.
- Borderline/Equivocal: 0.10-0.34 kU/L, suggesting possible sensitization.
- Positive: 0.70-3.49 kU/L, indicating sensitization.
- Strongly Positive: Greater than 17.5 kU/L, suggesting a high level of sensitization.

Results should be correlated with clinical history, as positive results indicate sensitization but not necessarily an allergy. Understanding these results aids in effective allergy management.

Price of test:£105

The lowest price from the last 30 days: £105

AI-Powered Insights and Expert Validation

Advanced AI Interpretation

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Language Model and Trusted Sources

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