Gastrointestinal Health
Exposure-Oriented Connection
Assessing toxicant burden that may help
contextualize dysbiosis patterns and
unexplained GI symptoms.
Environmental toxicants—including plasticizers, pesticides, herbicides, and industrial solvents—are near-ubiquitous in food, water, air, and consumer products, and several of these chemical classes have been shown in experimental models to alter gut microbiota composition and intestinal barrier function[1,2,3,7].
The TOXDetect Profile is a urine-based LC-MS/MS panel measuring metabolites across nine chemical classes from a single sample, which may help identify a toxicant-driven contributor to gut microbiome disruption and barrier dysfunction in complex or treatment-resistant GI presentations[1–7].
When Might Providers Consider the TOXDetect Profile
Neurologic & Mental Health – Exposure-Oriented Connection1
Dysbiosis-Pattern GI Symptoms Unresponsive to Standard Workup:IBS, IBD, or chronic bowel-pattern changes that have not fully responded to microbiome-, diet-, or food-sensitivity-focused interventions.[1,3,5]
High Plastic & Personal-Care-Product Use:Frequent use of plastic food/beverage containers, canned foods, or personal care products containing parabens, phthalates, or bisphenols.[1,7]
Unexplained Nausea, Vomiting, or GI Upset: GI symptoms without a clear structural or infectious cause, particularly with a plausible environmental or occupational exposure history.[6]
GI Symptoms with Overlapping Endocrine or Systemic Features:GI complaints co-occurring with thyroid symptoms, metabolic changes, fatigue, headache, or cognitive changes, suggestive of a broader toxicant burden.[1, 10]
High Conventional-Diet or Agricultural/Occupational Exposure History:Patients consuming a primarily conventional diet, working in agriculture, or with regular pesticide/herbicide contact.[2,6]
| Analyte Class | Everyday Exposure Sources | GI Relevance |
|---|---|---|
| Glyphosate | Residue on conventionally grown grains and produce; agricultural or occupational application; drinking water in some regions. Note: glyphosate itself (not other herbicide metabolites) is the analyte measured on this panel.[2] | Glyphosate inhibits a microbial pathway (EPSPS/shikimate) present in many gut bacteria but absent in humans; may help contextualize a chemical-exposure contributor to gut microbiome composition in patients with dysbiosis-pattern GI symptoms.[2] |
| Phthalates & Bisphenols | Plastics, food packaging, personal care products, and can linings.[1,7] | Both classes have been associated with alterations in gut microbiota composition and intestinal barrier function in experimental models; bisphenols are additionally linked to endocrine-mediated metabolic effects that may present with overlapping GI and systemic symptoms.[1,7] |
| Parabens | Personal care products, processed foods, and some medications.[9] | Methylparaben has been shown at human-relevant exposure levels to alter gut microbiota composition and contribute to metabolic and hepatic changes in animal models; may add context on total chemical burden in patients with dysbiosis-pattern GI symptoms.[9] |
| VOCs & Solvents | Cleaning products, renovation materials, industrial/occupational exposure, and traffic fumes.[11] | VOC exposure is associated with hepatic and systemic toxicant burden; because the liver and gut interact closely through enterohepatic circulation, elevated solvent burden may be a relevant consideration in patients with unexplained GI symptoms. Styrene specifically has been documented to cause nausea and reduced digestive function in exposed workers. [11] |
| Phthalates (MEHP, MEOHP) | Flexible PVC products, personal care products, food packaging, IV tubing, flooring [3,14] | Anti-androgenic endocrine disruption associated with inattentive/hyperactive ADHD behaviors, especially pronounced in children with co-occurring ASD [14] |
| Organo- phosphate & Pyrethroid Pesticides | Lawn care, agriculture, pest control, and residues on conventionally grown produce.[6] | Organophosphate exposure has been associated with GI complaints (nausea, abdominal symptoms) alongside neurological effects in occupational cohorts; may help identify a pesticide-exposure contributor in patients with overlapping GI and systemic complaints.[6] |
| Acrylamide | Processed and high-heat-cooked foods (fried, baked, or roasted starchy foods; coffee).[8] | Dietary acrylamide has been shown to disrupt intestinal tight-junction proteins, increase epithelial permeability, and promote pro-inflammatory cytokine activity in the gut in experimental models.[8] |
| VOC Panel (Benzene, Styrene, Acrylonitrile) | Vehicle exhaust, industrial emissions, tobacco smoke, solvent-based products, plastics manufacturing [5] | Central nervous system (CNS) toxins metabolized via CYP450 and glutathione conjugation—pathways frequently impaired in ASD; elevated oxidative stress and neuroinflammatory burden [4,5] |
| Perchlorate | Contaminated drinking water and some produce grown in affected regions.[10] | Primarily recognized for thyroid-disrupting (sodium-iodide symporter inhibition) effects; may help contextualize overlapping endocrine and GI symptom presentations during environmental toxicant workup.[10] |
Adds Exposure Context
Considers chemical-exposure history alongside standard GI workup when findings are incomplete or inconclusive.
Mechanistic Pathway Context
Chemical classes measured may map to gut microbiota disruption and barrier dysfunction relevant to the patient’s GI symptoms.[1,2,3]
Multi-Route Exposure Assessment
TOXDetect Profile captures dietary, occupational, and product-use exposure from a single urine sample.
How to Order
Neurologic & Mental Health – Exposure-Oriented Connection1
To order the TOXDetect Profile, register for a portal account. Specimen collection kits and requisition forms are available through your account portal. For clinical support or interpretation questions, contact our clinical education team.
Explore Other Gastrointestinal Health Lenses:
This webpage is intended for licensed healthcare professionals and is for informational and educational purposes only. TOXDetect Profile results are not intended to diagnose, treat, cure, or prevent any disease. All clinical interpretation should be made by a qualified healthcare provider in the context of the individual patient. Statements regarding associations between toxicant exposure and health conditions are based on published literature and do not constitute diagnostic claims. Not a substitute for clinical judgment.
References
- Chiu K, Warner G, Nowak RA, Flaws JA, Mei W. The Impact of Environmental Chemicals on the Gut Microbiome. Toxicol Sci. 2020;176(2):253–284. doi:10.1093/toxsci/kfaa065.
- Walsh L, Hill C, Ross RP. Impact of glyphosate (Roundup™) on the composition and functionality of the gut microbiome. Gut Microbes. 2023;15(2):2263935. doi:10.1080/19490976.2023.2263935.
- Ni J, Wu GD, Albenberg L, Tomov VT. Gut microbiota and IBD: causation or correlation? Nat Rev Gastroenterol Hepatol. 2017;14(10):573–584. doi:10.1038/nrgastro.2017.88.
- Michielan A, D’Incà R. Intestinal Permeability in Inflammatory Bowel Disease: Pathogenesis, Clinical Evaluation, and Therapy of Leaky Gut. Mediators Inflamm. 2015;2015:628157. doi:10.1155/2015/628157.
- Shaikh SD, Sun N, Canakis A, Park WY, Weber HC. Irritable Bowel Syndrome and the Gut Microbiome: A Comprehensive Review. J Clin Med. 2023;12(7):2558. doi:10.3390/jcm12072558.
- Perry J, Cotton J, Rahman MA, Brumby S. Organophosphate exposure and the chronic effects on farmers: a narrative review. Rural Remote Health. 2020;20(1):4508. doi:10.33235/jrrh.4508.
- Benjamin S, Masai E, Kamimura N, Takahashi K, Anderson RC, Faisal PA. Phthalates Impact Human Health: Epidemiological Evidences and Plausible Mechanism of Action. J Hazard Mater. 2017;340:360–383. doi:10.1016/j.jhazmat.2017.06.036.
- Palus K. Dietary Exposure to Acrylamide Has Negative Effects on the Gastrointestinal Tract: A Review. Nutrients. 2024;16(13):2032. doi:10.3390/nu16132032.
- Zhang H, Zhao Y, Tu H, Liu Y, Lin Y, Cai Y, Chi L, Zhang T, Dai B, Xue J. MeP Induces Metabolic Disorder and Liver Damage at Human-Relevant Exposure Levels: Role of the Gut Microbiota. Environ Health. 2025;3(11):1393-1405. doi:10.1021/envhealth.5c00111.
- Leung AM, Pearce EN, Braverman LE. Environmental perchlorate exposure: potential adverse thyroid effects. Curr Opin Endocrinol Diabetes Obes. 2014;21(5):372-376. doi:10.1097/MED.0000000000000090.
- Agency for Toxic Substances and Disease Registry (ATSDR). Toxicological Profile for Styrene. Atlanta, GA: U.S. Department of Health and Human Services, Public Health Service; 2021.
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