You're not imagining it. Let's measure what your body already knows.
For the patient who has been told the mold is gone — and yet, somehow, isn't well.
Mycotoxins are the chemical residue fungi leave behind. They can persist on dust, fabric, and surfaces long after the visible mold is cleaned. If you've been navigating CIRS, MCAS, or unexplained chronic symptoms, this is the data point your story has been missing.
The mold left. The chemistry stayed.
Conventional mold air sampling answers a single question: is mold actively growing right now? That question matters — but it is not the only question. For people with CIRS, mast cell activation, or post-exposure illness, the question is often very different: is the chemistry of what was here still on the surfaces, in the dust, in the HVAC?
Mycotoxins — secondary metabolites produced by fungi — are small, stable, and stubborn. They can outlast the colony that made them by years. A successful remediation removes the visible biology. Mycotoxin sampling confirms whether the residue went with it.
This is the test that finishes the story.
Six families. One picture of your environment.
These are the mycotoxin groups most relevant to chronic indoor exposure and most frequently requested by CIRS-literate and environmentally-aware clinicians. Sampling is tailored to your specific concerns and the building's history.
Trichothecenes
Stachybotrys · Fusarium
Includes T-2 and satratoxins. Associated with the species commonly called "black mold." Among the most clinically significant mycotoxins in chronic indoor exposure cases.
Ochratoxin A
Aspergillus · Penicillium
Often identified in HVAC systems, water-damaged building materials, and stored organic dust. Highly stable and resistant to standard cleaning protocols.
Aflatoxins
Aspergillus flavus · A. parasiticus
Among the most studied and most potent mycotoxins. Their presence is a meaningful indicator of contamination requiring intervention.
Gliotoxin
Aspergillus fumigatus
Immunosuppressive metabolite that has gained increased clinical interest in chronic inflammatory cases. Commonly evaluated in CIRS workups.
Zearalenone
Fusarium species
Endocrine-active mycotoxin. Most associated with Fusarium contamination but found in chronically water-damaged structures as well.
Sterigmatocystin
Aspergillus versicolor
Precursor compound to aflatoxin. A common finding in long-term moisture-damaged building materials and an indicator of historical exposure.
What the process looks like, from your first call to the debrief.
The Conversation
We talk first. Your history, your symptoms, the building's water-damage history, what your provider is hoping to confirm. The sampling plan is built around your situation — not a generic checklist.
The Visit
Settled dust, surface, HVAC, and air sampling — chosen based on the conversation. ERMI- and HERTSMI-2-compatible dust collection is available where appropriate. Everything is documented as we go.
The Lab
Samples are processed by a third-party accredited laboratory. We do not own it. We do not benefit from any particular finding. The data is independent on purpose.
The Debrief
You receive a written report formatted for clinical use — and a call to walk through it together. What was found, what it likely means, what would reasonably come next. No upsell. No fear.
Six common starting points.
People arrive at mycotoxin sampling from different doorways. Most have been navigating their symptoms — and the search for answers — for longer than they want to admit.
CIRS & Biotoxin Illness
To confirm a suspected source and to verify a remediation actually finished the job.
MCAS Patients
To identify environmental triggers so a safer space can be designed around them.
Pre-Purchase Buyers
For families with known sensitivities — before signing on a property with unknown history.
Post-Remediation
Independent verification that the chemistry — not just the visible mold — has been addressed.
Provider Referrals
Functional medicine clinicians who need real environmental data to complete an exposure history.
Unexplained Symptoms
When recurring symptoms point toward environmental exposure but conventional testing keeps coming back clean.
A report built to actually be used.
Every report is structured so it serves two readers — you, and the clinician working alongside you.
- Lab-validated mycotoxin panel with concentrations and reporting limits.
- A sampling map showing exactly where every sample was collected.
- Plain-language interpretation — so the report is readable, not just technical.
- Provider-ready formatting to share with your functional medicine clinician.
- Recommended next steps for remediation scope, source isolation, or further evaluation.
- A debrief consultation — we walk through it together. Not a PDF in your inbox.
If we benefited from finding a problem, you could never quite trust the report. So we built our practice the other way — we sample, we do not remediate, we do not own the lab. The data is clean because nothing else makes sense.
Ready to know what your environment is actually holding?
Speak with our team about whether mycotoxin sampling is appropriate for your situation. We serve the Mid-Atlantic in person, and offer nationwide remote consultation for clients and clinicians elsewhere.
For Practitioners & Data-Driven Patients
Looking for clinical depth?
If you prefer a technically detailed assessment of mycotoxin sampling methodology, reference standards, and clinical interpretation, we've created a companion page with that focus.
View Clinical Assessment →