The Plaice IgG blood test measures Immunoglobulin G (IgG) antibodies against proteins found in plaice, a type of flatfish. It is used in some food sensitivity panels to assess possible immune responses to dietary intake of plaice. However, unlike IgE antibody testing, which is validated for diagnosing immediate food allergies, IgG testing lacks clinical validation and remains controversial.
IgG antibodies to food proteins often represent normal immune exposure or tolerance, not hypersensitivity. Therefore, the presence of IgG antibodies to plaice should not be interpreted as evidence of an allergy or intolerance without supporting clinical symptoms.
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The Plaice IgG blood test measures Immunoglobulin G (IgG) antibodies against proteins found in plaice, a type of flatfish. It is used in some food sensitivity panels to assess possible immune responses to dietary intake of plaice. However, unlike IgE antibody testing, which is validated for diagnosing immediate food allergies, IgG testing lacks clinical validation and remains controversial.
IgG antibodies to food proteins often represent normal immune exposure or tolerance, not hypersensitivity. Therefore, the presence of IgG antibodies to plaice should not be interpreted as evidence of an allergy or intolerance without supporting clinical symptoms.
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
The test may be used to:
Identify IgG-mediated immune exposure to plaice proteins
Supplement food sensitivity assessments in integrative or alternative medicine
Support dietary evaluation in patients with non-specific gastrointestinal or inflammatory symptoms
Explore immune response profiles in broader food IgG panels
Who Should Get Tested
This test may be considered for:
Individuals undergoing functional or integrative evaluations for food sensitivities
Patients with chronic or unexplained symptoms potentially linked to diet
Those interested in personalized dietary adjustments based on IgG panels
Individuals under non-conventional medical supervision evaluating immune exposure patterns
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
Negative or Low IgG: Suggests minimal immune exposure to plaice
Elevated IgG: Indicates prior immune recognition of plaice proteins
Important: Does not indicate an allergic reaction or intolerance
Not recommended by allergy or immunology societies for diagnosing food allergy
For suspected fish allergy, the Plaice IgE test is the clinically accepted method
Price of test:£39
The lowest price from the last 30 days: £39
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