Walnut (f256) IgE with Reflex to Component Panel
Screens IgE sensitization across the foods behind most food-allergy reactions.
Consider this test if:
- Reactions like hives, swelling, mouth tingling, or GI upset after eating that you cannot pin to a specific food
- A history of a severe or anaphylactic reaction and you want to map sensitization across common triggers
- Skin-prick testing is impractical because of eczema, dermographism, or antihistamine use
- Building a baseline before an oral food challenge or a supervised reintroduction
- Sorting out which of several suspected foods is worth further evaluation
- HSA/FSA eligible
- Results delivered to your dashboard · Reviewed by a real clinician
- Drawn at a CLIA/CAP-accredited lab near you ·
Reflex testing
If your IgE result for egg white, cow's milk, or peanut comes back abnormal, the matching allergen component panel runs automatically to identify which specific proteins you react to and help gauge the risk of a serious reaction. This is done at no additional cost.
Pre-test considerations
No fasting required, and timing during the day does not affect the result. Antihistamines do not interfere with blood IgE testing, so you do not need to stop them beforehand, unlike skin-prick testing. Bring a record of which foods provoke symptoms and how quickly, since results are only meaningful alongside your reaction history.
Video consult with your Care Team
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What this test is for
This is a food allergen panel that measures IgE antibodies to 15 foods commonly associated with allergic reactions, including walnut, cashew, almond, hazelnut, peanut, egg white, cow's milk, wheat, soybean, sesame, shrimp, scallop, codfish, salmon, and tuna. IgE is the antibody class that drives immediate allergic reactions, from hives and swelling to gastrointestinal symptoms and, at the severe end, anaphylaxis. A positive result means sensitization, not a confirmed allergy: many IgE-sensitized people eat the food without any symptoms, so results are read against a history of reactions that track with exposure. It is most useful when skin testing is impractical, such as with widespread eczema, dermographism, or ongoing antihistamine use. The panel is broad, so expect some positives that do not correspond to real-world reactions.
Biomarkers tested
Includes 2 biomarkers
- Specimen
- Serum
- Measures
- Concentration
This test detects IgE antibodies specific to walnut, the immune marker your body builds when it mistakes walnut proteins for a threat. A positive result means your immune system is primed to react on exposure, triggering histamine release that shows up as hives, lip or throat swelling, stomach upset, or in severe cases anaphylaxis. It's useful for confirming a suspected walnut allergy after a reaction, or for investigating unexplained symptoms after eating foods that may contain walnut or cross-reactive tree nuts.
- Specimen
- Serum
- Method
- Allergen-specific IgE
- Measures
- Presence / threshold
What you'll learn
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Insights that connect the dots. A clinician reads your whole picture, not one result in isolation, connecting family history, past results, and lifestyle into clear next steps.
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Your personalized action plan. Nutrition, supplements, and training in one clinician-reviewed protocol, updated as your results change.
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Track your trends. Upload results from any lab and see each biomarker trend over time, so you know what is working.
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Never miss a recheck. Mito tells you what is worth retesting and when, then reminds you so nothing slips.
What to expect
- 1 Book instantly
Click, book, done. Choose a convenient lab location near you. Transparent, up-front pricing.
- 2 Quick lab visit
Testing to fit your busy schedule, usually 15 minutes or less. Walk-in and appointments available.
- 3 Fast, dashboard-delivered results
Your results post straight to your dashboard as soon as the lab completes them.
- 4 Expert guidance
Included with Mito membership. A clinician reviews your results and your personalized action plan follows, with clear next steps.
Everything your health needs,
in one membership
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Every test at our cost
Members pay our cost on every test, with lab fees passed straight through. The full receipt is itemized, never padded.
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Continuous tracking, all in one place
Upload past labs and watch your trends over time. Every marker and visit lives in one longitudinal record, so all your care stays together.
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Year-round clinician support
Text anytime and get clinician-reviewed answers. When you want to go deeper, 1:1 consultations are available at affordable rates.
All for $9/month
Order any test or consult without joining. For $9/month, members unlock member prices, trend tracking, and year-round clinician guidance.
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$9 /mo
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Without membership
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Frequently asked questions
View all FAQsHow does pricing work?
Every test shows the member price next to the standard non-member price, so you can see what membership saves you. The member price is our cost, covering the lab and what it takes to run the service. It is never a profit on the test itself. Mito makes its money on the $9 membership, not on marking up your tests. Membership is $9 per month, and any applicable lab order or draw fee is itemized before you pay.
Where do I get tested?
Choose an available partner lab at checkout. If your cart contains multiple blood tests, Mito helps consolidate the eligible tests at one lab when possible. At-home kits and scans follow the collection or appointment process shown on their product page.
Is this eligible for HSA/FSA?
Yes. Eligible tests can be paid for with an HSA or FSA card at checkout.
When will I get my results?
Your results appear in your Mito dashboard after the laboratory completes processing. A clinician then reviews them before your analysis and personalized action plan are finalized. Timing varies by test, and specialty assays and at-home kits may take longer.
Do I need a physician's order?
No. Mito provides the laboratory order when one is required, so you do not need to arrange a separate physician visit before purchasing.
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