A B2B donor–buyer exchange for clinical-grade fecal microbiota, connecting screened stool donors with FMT clinics, biotech, and microbiome startups. Today, hospitals and trials hack together recruitment via Craigslist-style ads and manual screening, while labs complain on Reddit and Twitter about sample scarcity, inconsistent quality, and lack of compliant logistics. FecalMatch builds a regulated marketplace that embeds: - standardized donor onboarding and automated eligibility questionnaires - integration with CLIA/CAP labs for panel testing and digital donor profiles - pre-negotiated cold-chain logistics with chain-of-custody tracking and temperature telemetry - jurisdiction-aware legal docs covering consent, IP, and compensation. Revenue comes from B2B transaction fees, monthly SaaS for labs/clinics, and premium access to high-phenotype donor pools, with defensibility via compliance rails and a growing proprietary donor-performance dataset.