Rough Marshelder (Iva annua) Allergy (IgG4)
A weedy plant whose late-summer pollen can trigger hay-fever symptoms.
Consider this test if:
- Tracking your immune response during allergen immunotherapy for weed pollen
- Already confirmed sensitization by IgE and monitoring tolerance over time
- Working with an allergist on a structured desensitization plan
- Wanting a baseline IgG4 level before starting immunotherapy
- HSA/FSA eligible
- Results delivered to your dashboard · Reviewed by a real clinician
- Drawn at a CLIA/CAP-accredited lab near you ·
Pre-test considerations
No fasting required, and timing during the day does not affect the result. Note any ongoing allergen immunotherapy, since IgG4 levels rise with sustained exposure.
Video consult with your Care Team
A 1:1 call to discuss your health.
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What this test is for
Rough marshelder (Iva annua) is a weed found across much of North America, and its wind-borne pollen contributes to late-summer and fall allergy symptoms such as sneezing, nasal congestion, and itchy, watery eyes. This test measures IgG4 antibodies to rough marshelder, a blocking antibody that rises with repeated exposure and as the immune system builds tolerance. It does not diagnose allergy. If your question is whether you are truly allergic, the specific IgE test is the right marker; IgG4 is used mainly to monitor allergen immunotherapy.
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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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 — never a profit on the test itself; Mito makes its money on the $9 membership, not on marking up your tests. Membership is $9/mo, and you still pay the lab’s order fee. Prices are itemized before you pay, with no hidden fees.
Where do I get tested?
Choose a partner lab (Quest, Labcorp, or BioReference) at checkout. If your cart spans multiple tests, we consolidate the whole order onto a single lab so you only make one visit.
Is this eligible for HSA/FSA?
Yes. This test is HSA/FSA eligible, and you can pay with your HSA/FSA card at checkout.
When will I get my results?
Your results post to your dashboard once your lab completes them, then a clinician reviews them and your full analysis and personalized action plan (with clear next steps) follow. Turnaround varies by test: specialty assays and at-home kits take longer, and each test shows its expected turnaround before you buy.
Do I need a doctor’s order?
No. Mito provides the lab order for you, so you can book and get tested without a separate doctor visit.
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