The Complete Guide to Toxin Testing: Mold, Chemicals, and Heavy Metals Explained
- Dr. Teresa True
- 6 hours ago
- 5 min read
People search for toxin testing because they’re tired of feeling unwell and getting brushed off. Fatigue, headaches, brain fog, inflammation, hormone swings, gut issues, and metabolic slowdown are all signs that the body is dealing with more than it can handle. Toxin exposure is common, but almost no one gets properly tested for it.

If you’re looking for reliable toxin testing that actually gives answers, the Mosaic EnviroTox Complete + Metals test is the strongest, most comprehensive option we use in practice. It covers mold toxins, environmental chemicals, metabolic toxin markers, fuel additives, plasticizers, pesticides, and heavy metals. It gives people the data they need to stop guessing and start correcting the real problem.
This guide explains exactly what the test measures, how toxin testing works, and why this panel has become one of the most useful tools for understanding chronic symptoms.
What Is Toxin Testing?
Toxin testing measures the chemicals, mold toxins, and metals your body has been exposed to and is trying to process. Most exposures are invisible and happen through:
Indoor air
Food and water
Mold in homes and offices
Plastics and packaging
Personal care products
Cleaning products
Pesticides
Vehicle exhaust
Gasoline fumes
The Mosaic EnviroTox panel uses urine, which is ideal because urine captures stored toxins and metabolic byproducts. Blood only shows very recent exposures, so urine gives a more accurate and complete picture.
Blood only shows very recent exposures, so urine gives a more accurate and complete picture.
What the Mosaic EnviroTox Complete + Metals Test Includes

1. Mold Toxin Testing (Mycotoxins)
This category alone accounts for a huge portion of toxin-related symptoms. Mold toxins affect immune function, inflammation, energy, and neurological health. This test looks for:
Ochratoxin
Aflatoxin
Citrinin
Gliotoxin
Trichothecenes
Zearalenone
These are the toxins most likely to come from water-damaged buildings or contaminated foods.
2. Volatile Organic Compounds (VOCs)

These chemicals come from paint, flooring, new furniture, remodels, adhesives, cleaning products, gasoline, and vehicle exhaust. The test checks for metabolites linked with common VOC exposures. People struggling with low resilience, headaches, sinus issues, or chemical sensitivity often show elevated markers here.
3. Plasticizers and Phthalates

These disrupt hormones, thyroid function, and metabolism. They show up in:
Food packaging
Lotion, cosmetics, fragrances
Shower curtains
Water bottles
IV tubing
Baby toys
The panel looks at several phthalate metabolites to help pinpoint exposure sources.
4. Pesticides and Herbicides

This includes common agricultural chemicals found in lawn sprays, golf courses, non-organic produce, and groundwater and includes testing for Glyphosate (commonly known as Round Up). These toxins affect:
Nervous system regulation
Mitochondrial function
Detoxification capacity
Glyphosate in particular has been implicated in lymphatic cancers.
Patients with chronic fatigue or neurological symptoms often have issues here.

5. Fuel Additives and Combustion Products
If you live near traffic, pump gas, or spend time in garages or urban environments, you’re probably inhaling these on a daily basis. The test includes markers associated with gasoline additives and combustion byproducts.
6. Heavy Metals (+ Metals Add-On)
Heavy metals accumulate over time and affect the thyroid, immune system, blood sugar regulation, neurological function, and energy production.

This panel screens for:
Mercury
Lead
Arsenic
Cadmium
Aluminum
Nickel
Tin
Cesium
Barium
This is one of the most important categories for patients with autoimmune issues or unexplained chronic symptoms. These heavy metals can still be hidden in the bones, fat and other tissues, so if you are wanting to test heavy metals more thoroughly, speak with your physician about getting a provoked urine heavy metal test as well. That test uses a medication called DMSA to help pull metals out of the tissues and into the blood and urine. We can then compare the pre-DMSA urine testing to the post-DMSA urine testing and get a more precise idea of heavy metal body burden and if chelation therapy is necessary for treatment.
Why This Test Outperforms Other Toxin Tests
Most toxin testing panels are too narrow. They may only look at mold or just a few environmental chemicals. The Mosaic EnviroTox Complete + Metals test pulls every major exposure category together in one place.
This allows you to:
See your full toxic load
Identify the top categories affecting your symptoms
Build a targeted detox plan
Avoid random supplements
Track real improvement over time
Stop guessing
It’s straightforward, accurate, and clinically actionable, what we look for in all our functional and standard tests.
Order Now:
Who Benefits Most From Toxin Testing
This test is ideal for people dealing with:
Brain fog
Mold exposure
Chemical sensitivity
Slow metabolism
Persistent inflammation
Skin issues
Unexplained neurological symptoms
If you’ve “tried everything” and still feel stuck, toxin testing often provides the missing insight. Read more about our functional lab testing options - no insurance or appointment needed.
FAQs
Is toxin testing done with blood or urine?
Urine is more accurate for stored toxins. Blood is only helpful for very recent exposures as toxins are quickly often pushed into other tissues to quickly eliminate them from the blood.
Can I get toxin testing near me?
Yes. This test is ordered online and done at home.
Does this test check for mold toxins?
Yes. It includes a full mold mycotoxin panel.
What about heavy metal testing?
The + Metals panel includes mercury, lead, arsenic, cadmium, aluminum, nickel, tin, and more.
Can toxin testing help with metabolic issues?
Yes. Many toxins interfere with hormonal and mitochondrial function, which directly affects metabolism.
Do I need this test if I already tried detoxing?
If detox made you feel worse or didn’t change anything, you likely don’t know what you’re targeting. This test fixes that.
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