Shellfish Intolerance
Feeling bloated, tired, or unwell after eating fish? A shellfish intolerance blood test can help uncover whether your immune system is reacting to proteins in fish.
Unmask Hidden Reactions: Test for Delayed Shellfish Sensitivity and Reclaim Meal-Time Comfort
Bloated or foggy after a seafood meal, but no hives or drama? Shellfish intolerance triggers subtle IgG immune responses to proteins in crab, shrimp, or scallops – causing ongoing gut woes, fatigue, or skin flares without the allergy alarm. Our blood test measures these antibodies, revealing if shellfish is quietly disrupting your wellbeing.
A nurse handles a simple venous draw at home, results in 7 days – the key to targeted diet tweaks and symptom relief.
The Sneaky Side of Shellfish Sensitivity – Why It Feels Like Everything Else But Food
Unlike instant allergies, shellfish intolerance brews delayed – IgG antibodies flaring hours or days later, mistaking proteins for threats and sparking low-level inflammation. Post-prawn dinner: Bloating swells your gut, fatigue weighs you down, brain fog clouds work, or eczema itches anew – all dismissed as stress, hormones, or ‘bad nights’. In the UK, where fish Fridays are routine, this affects many with vague digestive shifts, headaches, or malaise, eroding energy without clear cause.
Guessing drains you – eliminating blindly risks nutrition gaps; testing pinpoints triggers like scallop or crayfish reactions, empowering confident changes. “Seafood was my saboteur – the IgG test confirmed, and ditching it cleared my fog.” – Olivia T., Plymouth.
End the mystery – feel steady after every bite.
Who Should Take the Shellfish Intolerance Blood Test? If Seafood Lingers Uncomfortable, Test Now
This IgG-focused screen suits those with nagging post-meal unease. Consider it if you’re:
- Battling bloating, cramps, or bowel changes after shellfish dishes?
- Feeling fatigued, sluggish, or headache-prone post-fish meals?
- Noticing skin flares like rashes, acne, or eczema tied to seafood?
- Experiencing brain fog, concentration dips, or general malaise without obvious reasons?
- A regular shellfish eater (e.g., coastal diets, restaurants) with ongoing gut or energy issues?
Test once for baseline; retest if symptoms shift post-elimination or diet reintro – empowering informed eating.
What Your Shellfish Intolerance Blood Test Reveals – IgG Antibody Insights for Food Reactions
Our accredited UK lab tests your venous sample for immune markers, providing a PDF report with levels, symptom correlations, and elimination guidance. Core focus:
- IgG as a Biomarker: Measures Immunoglobulin G antibodies to shellfish proteins (e.g., crab, scallop, crayfish, shrimp). Elevated IgG (>threshold, e.g., 20-50 units) suggests delayed sensitivity causing inflammation; report ranks reactions (mild/moderate/high) and ties to symptoms like bloating or fatigue. Not diagnostic alone – pairs with diet logs for accuracy.
Report includes a shellfish sensitivity score and baseline for retesting.
Ease Symptoms with Confidence – Personalised Steps from Your Results
Positive IgG? No panic – intolerances are manageable via elimination, often resolving gut and energy in 2-4 weeks. Consult a dietitian/GP:
- Elimination Phase: Avoid shellfish 4-6 weeks (swap tuna for tofu, prawns for veggies); track symptoms in a journal.
- Reintroduction Test: Gradually re-add (e.g., one scallop serving) to confirm triggers – 70% see relief persisting.
- Supportive Tweaks: Anti-inflammatory foods (berries, turmeric) for gut heal; probiotics for digestion. If severe, allergy doc for cross-checks.
Negative? Reassuring – explore other causes like FODMAPs; retest if issues evolve.
What You Might Be Wondering – Honest Insights Below
- Allergy or intolerance? This tests IgG for delayed reactions, not IgE allergies (immediate/severe) – safe for mild cases.
- Accurate without symptoms? Best with recent exposure; eat shellfish 1-2x/week pre-test for reliable IgG.
- Home draw simple? Yes – quick arm prick, no fasting; confidential for dietary privacy.
- Not definitive? Guides elimination; GP integrates with history for full picture.
Dine freely – uncover truths today.
Testing for Shellfish Intolerance
✅ Over 2,000 tests completed across the UK
✅ Trusted by patients, athletes, and health-conscious professionals
✅ NHS-comparable testing standards
✅ 100% secure and confidential
How often should I have a Shellfish Intolerance test?
You typically only need a Shellfish Intolerance Test once, unless your symptoms change significantly or your diet reintroduces shellfish after a long break.
Nurse appointments fill up fast — book now to secure your preferred date.
Other Questions
- Bloating or stomach cramps after eating fish
- Fatigue or feeling sluggish post-meal
- Skin issues like rashes, eczema, or acne
- Brain fog or trouble concentrating
- Headaches or general malaise
- Ongoing digestive issues
- Blue mussel
- Lobster
- Clam
- Oyster
- Crab
- Scallop
- Crayfish
- Shrimp
Take the blood test as early as possible when you feel bloated, fatigued, foggy-headed, or unwell after eating fish.
Collection method: Venous blood
Results available: 1-2 days after the sample has reached the laboratory.
IgG as a Biomarker
IgG (Immunoglobulin G) is an antibody that signals your immune system has been exposed to certain foods. In food intolerance testing, raised IgG levels may suggest your body is reacting to those foods, potentially causing delayed symptoms like bloating, fatigue, or skin issues. While not a diagnosis on its own, IgG is a helpful marker for identifying possible food sensitivities when reviewed alongside your symptoms and dietary habits.
How it Works
1. Order a Test
Order your test, and then Answer the Questions about why you’re taking that test.
Our nurse will contact you for dates, so they can take your blood sample at your home.
Our nurse will then send your sample to our laboratory.
2. Our laboratory team run the tests
Our skilled laboratory staff conduct your blood tests in a clean and secure environment, ensuring accuracy and reliability.
Each test follows strict protocols to maintain the highest quality standards.
3. Receive Your Results within 7 days
We will email you to inform you that your blood test results are ready.
The email will have a PDF report attached, sent directly to your inbox.
4. Monitor your levels over time
With regular ongoing tests and reports, you can track your results. The reports can be shared with your GP.
Check if you’re improving healthily or where changes could be made.
