GI-MAP® (GI Microbial Assay Plus)
Research overwhelmingly indicates that gut health impacts overall health. The gut microbiome plays a critical role in mediating the effects of diet, digestion, immunity, metabolic function, and more. This GI-MAP (Microbial Assay Plus) test is truly unique in the field – relying exclusively on quantitative polymerase chain reaction (qPCR) technology to detect parasites, bacteria, fungi, and more by targeting the specific DNA of the organisms tested. The quantitative insights provided in this process, known for accuracy and reliability, allow practitioners to create more personalized treatment protocols for optimizing gut function and addressing dysfunction.
Get a free sample report
A clear, color-coded report your practitioner uses to build your plan. Every marker is grouped, flagged, and plotted against reference ranges.
FAQ
Answers to your questions about lab testing and services.
Dr. Julie Ann Hortman
Dr. Julie Ann Hortman is a nurse practitioner, educator, and functional medicine practitioner with 29 years of healthcare experience, advanced training in functional medicine, and a Doctor of Nursing Practice with a focus in lifestyle medicine. Her work centers on helping patients and healthcare professionals identify underlying contributors to digestive and chronic health concerns, with an emphasis on gut health, prevention, and evidence-informed lifestyle strategies that support long-term well-being. Through her consulting practice, Julie helps clients better understand the connections between gut health, lifestyle factors, and symptoms affecting digestion, energy, sleep, immune function, weight, skin health, and mental clarity. She combines individualized education with practical, evidence-informed recommendations to help clients recognize modifiable contributors to their symptoms and make sustainable changes that support improved health. Julie also serves as faculty at Emory University, where she educates future nurse practitioners, and is a member of the medical education team at Diagnostic Solutions Laboratory. Through her professional mentorship program, she supports healthcare practitioners seeking to deepen their expertise in gut health, advanced stool testing, clinical applications, and practice development. Whether she is working with patients, students, or practicing clinicians, education remains at the heart of Julie’s work.
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Gastrointestinal Health