GI-MAP Stool Test

GI-MAP uses DNA-based PCR technology to identify and quantify bacteria, parasites, fungi, viruses, and digestive markers in a single stool sample. Unlike standard stool cultures that only grow a fraction of gut organisms, PCR detects DNA directly, providing a comprehensive map of your gut microbiome.

Standard stool tests use microscopy or culture methods that miss many organisms. GI-MAP uses quantitative PCR, meaning it not only detects pathogens but tells you exactly how much is present. This quantification helps practitioners determine clinical significance and track treatment effectiveness over time.

You collect a small stool sample at home using the provided kit, which includes a collection container and instructions. The sample is shipped to the lab in a prepaid mailer. No special diet preparation is required, though your practitioner may advise stopping certain supplements briefly before collection.

GI-MAP has high sensitivity (around 80%) for detecting pathogens via PCR. However, one peer-reviewed study noted specificity of only 26%, meaning false positives can occur. This is why practitioner interpretation is essential. Results should be correlated with symptoms, not treated in isolation.

Typically 10-14 business days from when the lab receives your sample. Results are sent to your ordering practitioner with detailed reference ranges and clinical significance markers.

The GI-MAP costs approximately $350-400 through most practitioners. Some offer bundled pricing with consultations. Insurance rarely covers functional stool testing, though HSA/FSA funds can usually be applied.