Clam IgE Level
The Clam IgE test measures IgE antibodies to clam proteins. It helps diagnose true shellfish allergy and assess immediate allergic risk.
Turnaround time
Results available 2 days after arrival in lab. Doctor's report sent the day after results available (if required)
Biomarkers count
1
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Details about Clam IgE Level
What is the Clam IgE level test?
The Clam IgE level test is a blood test that measures Immunoglobulin E (IgE) antibodies directed against proteins found in clams, a type of shellfish. IgE antibodies are responsible for immediate allergic reactions, which can occur shortly after exposure.
Shellfish allergy is one of the most common and potentially severe food allergies. This test specifically identifies IgE-mediated clam allergy, distinguishing it from non-allergic food intolerance or delayed sensitivity.
The test is widely used in allergy clinics to assess suspected shellfish reactions in both adults and children.
Why do I need a Clam IgE test?
Clam allergy can cause rapid and sometimes severe allergic reactions. Identifying IgE sensitisation helps prevent accidental exposure and reduces the risk of serious outcomes.
You may need a Clam IgE test if you experience symptoms shortly after eating clams or other shellfish.
You may benefit from this test if you have:
- Hives or skin rash after eating clams
- Swelling of lips, face, tongue, or throat
- Itching or tingling in the mouth
- Wheezing, coughing, or shortness of breath
- Nausea, vomiting, or abdominal pain
- Dizziness or fainting
- A history of shellfish reactions
- Unclear or conflicting allergy test results
Shellfish allergy often persists into adulthood and may worsen with repeated exposure.
Benefits of the Clam IgE test
- Confirms true clam allergy
Detects IgE-mediated immune response. - Assesses immediate reaction risk
Helps evaluate severity potential. - Supports safe dietary avoidance
Guides elimination of clams and related shellfish. - Clinically recognised allergy marker
Used in standard allergy diagnostics. - Suitable for children and adults
Used in paediatric and adult allergy assessment. - Simple blood test
No food challenge required. - Useful when skin testing is unsuitable
Safer option for high-risk individuals. - Distinguishes allergy from intolerance
Prevents unnecessary dietary restriction.
Step by step – how the test works
You can access Clam IgE testing UK-wide through two options:
- Clinic appointment
Choose your nearest UK clinic, where a healthcare professional will take your blood sample. - At-home or hotel visit (£60 extra)
A qualified phlebotomist comes to your home or hotel, so you don’t need to travel.
Your sample is analysed in an accredited UK laboratory, and results are delivered securely.
Your results explained
Negative / low Clam IgE
Suggests no evidence of IgE-mediated clam allergy. Symptoms may be due to intolerance or another cause.
Typical UK reference range:
- < 0.35 kUA/L
Moderate Clam IgE levels
Indicate sensitisation to clam proteins. Clinical relevance depends on symptoms and exposure history.
Typical UK interpretation:
- 0.35–3.5 kUA/L
High Clam IgE levels
Suggest a strong allergic response and increased risk of immediate reactions.
Typical UK interpretation:
- > 3.5 kUA/L
Results must always be interpreted alongside clinical symptoms.
How It Works
Simple steps to get your results
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Choose your test online and book in seconds. Select your preferred clinic location or home visit option.
Visit or Test at Home
Attend one of our UK or London clinics, arrange a home nurse visit, or use a finger-prick kit where available.
Get Your Results
Your sample is analysed by accredited UK laboratories, with secure results delivered directly to you.
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WhatsApp UsHow to Prepare for Your Test
Follow these guidelines for accurate results
Sample Timing
Where possible, attend your blood test between 7am and 12pm. Please wait until any short-term illness or infection has fully resolved before testing. Avoid intense exercise for 24–48 hours beforehand, as this can affect certain markers.
Fasting & Hydration
Fasting is not always required, but some tests may recommend it. If fasting is advised, avoid food for 8–12 hours before your appointment and drink water only. Stay well hydrated, as this helps with sample collection and accuracy.
Medications & Supplements
Continue prescribed medications unless advised otherwise by your clinician. Avoid vitamin, mineral, or biotin supplements for at least 24–48 hours before your test, as these can interfere with results. If you are unsure about any medication or supplement, please let us know before your appointment.
Hormones & Menstrual Cycle
For hormone-related tests, timing within your menstrual cycle may be important. If relevant, follow any specific guidance provided on your test page.
If you have any questions or special circumstances, our team is happy to advise before your appointment.