Autism Dietitian
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GI-Map Testing


GI-Map Testing

Individuals with autism spectrum disorder are shown to have higher levels of intestinal dysbiosis (imbalance of gut bacteria) [1,2] & yeast overgrowth which can cause gastrointestinal symptoms and intestinal permeability (also known as leaky gut syndrome) [2]. Bacteria and yeast overgrowth can cause:

  • Bloating & gas

  • Chronic constipation and/or diarrhea

  • Fatigue (from malabsorption of nutrients)

  • Brain fog/difficulty paying attention

  • Trouble with digestion of carbohydrates

  • Goofy/silly behavior at inappropriate times

  • Sugar cravings

  • Food sensitivity

  • …and many others!


GI-Map Microbial Assay Plus allows us to test gastrointestinal pathogens including bacteria, parasites and viruses that may be leading to GI symptoms, further exacerbating autistic symptoms. Studies show that children with ASD with frequent abdominal pain, gaseousness, diarrhea, constipation or pain on stooling scored worse on irritability, social withdrawal, stereotypy, and hyperactivity compared with children having no frequent GI symptoms [3].



Bacteria Tested

A small stool sample will reveal:

  • Bacterial pathogens

  • Parasitic pathogens

  • Viral pathogens

  • H. Pylori

  • Normal bacterial flora

  • Dysbiotic/overgrown bacteria

  • Potential autoimmune triggers

  • Yeast/fungi

  • Viruses

  • Parasites (protozoa & worms)

  • Antibiotic resistant genes

  • Intestinal health markers for:

    • Digestion

    • GI Markers

    • Immune Response

    • Inflammation

  • Recommended add-on: Zonulin (measures intestinal permeability)

Interested in GI-Map?


[1] Tomova A, Husarova V, Lakatosova S, et al. Gastrointestinal microbiota in children with autism in Slovakia. Physiol Behav. 2015;138:179-87. LINK

[2] Iovene MR, Bombace F, Maresca R, et al. Intestinal Dysbiosis and Yeast Isolation in Stool of Subjects with Autism Spectrum Disorders. Mycopathologia. 2017;182(3-4):349-363. LINK

[3] Chaidez V, Hansen RL, Hertz-picciotto I. Gastrointestinal problems in children with autism, developmental delays or typical development. J Autism Dev Disord. 2014;44(5):1117-27. LINK