The Plaice IgE blood test detects specific Immunoglobulin E (IgE) antibodies directed against plaice fish proteins, helping to diagnose an allergic reaction to plaice, a flatfish commonly consumed in many diets. The test is used when an individual experiences allergic symptoms after eating plaice or food products containing it.
Typical symptoms of plaice allergy include hives, itching, swelling, gastrointestinal issues, respiratory difficulties, and in severe cases, anaphylaxis. The test is performed using ImmunoCAP® or similar fluorescence enzyme immunoassay techniques. Results are reported in classes from 0 to 6, reflecting the degree of sensitization.
A positive test indicates sensitization but must be interpreted in the context of clinical symptoms. Cross-reactivity with other fish species is possible, but some individuals may be specifically allergic to plaice.
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The Plaice IgE blood test detects specific Immunoglobulin E (IgE) antibodies directed against plaice fish proteins, helping to diagnose an allergic reaction to plaice, a flatfish commonly consumed in many diets. The test is used when an individual experiences allergic symptoms after eating plaice or food products containing it.
Typical symptoms of plaice allergy include hives, itching, swelling, gastrointestinal issues, respiratory difficulties, and in severe cases, anaphylaxis. The test is performed using ImmunoCAP® or similar fluorescence enzyme immunoassay techniques. Results are reported in classes from 0 to 6, reflecting the degree of sensitization.
A positive test indicates sensitization but must be interpreted in the context of clinical symptoms. Cross-reactivity with other fish species is possible, but some individuals may be specifically allergic to plaice.
Price of test:£39
The lowest price from the last 30 days: £39
Awaiting result:
12 hours
Collect material:
Blood
Prepare:
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Purpose of the test
This test is used to:
Confirm sensitization to plaice in individuals with suspected fish allergy
Diagnose allergic reactions to plaice involving IgE-mediated mechanisms
Guide dietary recommendations and allergy management plans
Support differential diagnosis in patients allergic to multiple fish species
Who Should Get Tested
The Plaice IgE test is recommended for:
Individuals who experience allergic symptoms after consuming plaice or fish-based dishes
Patients with known fish allergies who require detailed allergen profiling
Children or adults being evaluated for food allergies
Those with suspected cross-reactivity to fish proteins
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
Class 0 (<0.35 kU/L): Negative – no sensitization
Class 1–6 (≥0.35 kU/L and higher): Positive – sensitization to plaice present
Higher classes suggest greater likelihood of clinical allergy
Must be interpreted alongside history of symptoms and, if needed, oral food challenge
Cross-reactivity with other fish is possible, but not guaranteed
Price of test:£39
The lowest price from the last 30 days: £39
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