Throne Science, the smart toilet sensor company transforming everyday bathroom visits into a source of continuous health insight, released the results of its first clinical validation study, which was accepted and presented at the 2026 American College of Gastroenterology (ACG) Annual Scientific Meeting.

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The new study validates that Throne’s AI model classifies stool according to the Bristol Stool Scale (BSS) with accuracy comparable to a board-certified gastroenterologist, giving people and their doctors a reliable way to track and monitor preventative gut health from home. The findings represent a historic achievement delivering the first published validation of a consumer product in the gut-health category and setting a new standard for testing across the industry.

Throne’s AI model was tested against five gastroenterologists, using 278 real-world images collected from beta-testers, and scored across all seven Bristol Stool Scale types. The Bristol Stool Scale is the standard clinical measure of gut health, but it hinges on patient memory and willingness to self-report honest and accurate feedback about their bowel movements. The study found that, on the most common stool type (BSS-4), the model’s exact-match agreement was 89.6%, beating the human-to-human baseline of 59.9%. With many physicians remaining wary of relying on self-report, this study is a major step forward in building trust for the entire category.

“From day one, the question we’ve heard most often is, ‘How accurate are gut health sensor products?’” said Scott Hickle, CEO and Co-Founder of Throne Science. “Instead of answering with a marketing claim, we backed Throne with evidence, putting our model head-to-head with a leading clinical board of gastroenterologists. You can’t have a gastroenterologist in the bathroom with you, but Throne proved you can place the same faith and trust in its AI-powered health insights.”

Replacing Guesswork With Evidence-Based Technology

Physicians have utilized the Bristol Stool Scale, dating back to its creation in 1997, as a foundational medical tool that gives healthcare providers a common language with patients to indicate stool form and gut health implications. However, the scale has long been under scrutiny as it widely relies on inaccurate memory and subjective information from untrained patients.

Throne automates that process, replacing user lapse and oversight with validated AI accuracy. For consumers, Throne’s smart sensor provides a hands-off tool for health tracking to help manage IBS and other digestive issues. For clinical physicians, Throne’s continuous monitoring and reporting fill in the gaps between patient visits, providing objective information, and informing pertinent patient-provider conversations and diagnoses.

“What I find most exciting about this study is that we didn’t just compare Throne’s AI model with a reference chart – we compared it with independent gastroenterologists, and it performed well,” said Dr. Jennifer Seminerio, physician and co-author of the study. “In GI, having reliable, objective patient data can make a real difference for both patients and providers. This is an important first step, and I’m excited to see how the technology performs as we validate it in larger, real-world clinical settings.”

The Beginning of a Larger Clinical Roadmap

Every visit to the bathroom produces vital health information from our GI and urinary tracts, yet most of that signal is flushed away. Throne tracks gut health through hydration status, urinary function, and bowel movements. The sensor clips onto your toilet, using passive monitoring to eliminate the guesswork and transform daily visits into objective health data.

Moreover, Throne seeks to carve a path forward beyond monitoring hydration and urinary function. Following the publication of the abstract, the company will look to conduct larger clinical validations with more users in real-world settings to hone its AI model capabilities and diagnostic accuracy even further. Throne’s long-term mission aims to provide at-home screening for early signs of colorectal and urinary tract cancers, equipping both users and healthcare providers with early detection and preventative health solutions.

To learn more about Throne and the full study, visit thronescience.com.

About Throne Science

Throne Science is a smart toilet sensor that tracks gut health, hydration, and urinary function automatically with every flush. A discreet sensor attaches to any standard toilet and, combined with Throne’s AI-powered companion app, surfaces continuous patterns in digestive health, hydration status, and urinary function every day. The data accumulates passively and presents itself as accessible, actionable observations rather than clinical readings. Throne’s long-term mission is to build the first at-home, continuous screener for early signs of colorectal cancer and cancers of the urinary tract. For more information, visit thronescience.com.

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