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After more than seven years of research and development, Withings, a pioneer in connected health, launches U-Scan, its most ambitious innovation to date a miniaturized urine analysis laboratory that integrates advanced chemistry, optics, and artificial intelligence directly into the toilet environment. U-Scan Nutrio and U-Scan Calci will be available beginning on October 29, 2025, in Europe and the United States.
Discreet, fully automated, and already awarded 12 innovation prizes, U-Scan represents a breakthrough in preventive health, turning a simple daily routine into a continuous source of biological insights that help users understand, anticipate, and act on their health in real time.
“The story of U-Scan began with a simple intuition: urine provides a precise and comprehensive window into our health. The challenge was to transform that insight into a laboratory so compact it could be integrated directly into a toilet without changing anyone’s habits.”
- Eric Carreel, Founder & Chairman, Withings
A revolution in everyday health tracking
Urine is a rich source of health information containing more than 3,000 metabolites that mirror our nutrition, hydration, hormonal balance, and metabolism. Yet this goldmine of data has long remained underused, confined to occasional laboratory tests performed far from real life.
U-Scan changes that. By embedding laboratory science directly into the toilet, Withings turns a simple daily routine into a new form of preventive health tracking effortless, discreet, and continuous.
How it works lab - science, made effortless
U-Scan fits seamlessly inside your toilet and collects urine samples automatically using a sensitive thermal sensor. A small sample is drawn and analyzed on-site using miniaturized biochemical sensors integrated into an interchangeable cartridge.
Within minutes, results are processed directly on the device and transmitted via Wi-Fi to the Withings app. Users can track hydration, nutritional balance, calcium trends, and more. The app then translates these readings into actionable insights and personalized recommendations through Withings+, helping users understand and respond to their body’s signals.
Each cartridge lasts up to three months, though usage may be shorter depending on testing frequency, and they can be swapped out easily. Between analyses, U-Scan has a complimentary station capable of fully charging and cleaning the reader within three hours.
U-Scan Nutrio Master your body’s response to nutrition
The human metabolism is a dynamic system, influenced by diet, exercise, stress, and more. Yet most individuals lack quantitative visibility into their nutritional state. U-Scan Nutrio addresses this gap by capturing the daily to weekly measurements of four key urinary biomarkers: Bio-Acidity (urinary pH), HydroStatus (specific gravity), Ketones, and Vitamin C.
● Bio-Acidity (Urinary pH) Indicates acid-base balance; chronic acidity signals metabolic strain or poor diet (low produce, high protein/grains), affecting recovery and inflammation.
● HydroStatus (Specific Gravity) An essential component of nutrition tracking, urine specific gravity objectively shows if fluid intake sufficiently meets metabolic and performance needs.
● Ketones Ketone levels show when the body burns fat instead of sugar for energy (ketosis), helping assess fat metabolism, weight management, and adherence to low-carb diets.
● Vitamin C As a water-soluble vitamin and powerful antioxidant, its level is a direct measure of dietary adequacy and protection against cellular damage, crucial for overall health and recovery.
“We talk a lot about metabolism, inflammation, or nutrition but few people know where they truly stand. U-Scan Nutrio finally brings those invisible metrics into daily life, continuously and effortlessly.”
- Christelle Barakat, Director of Chemistry Research, Withings
By transforming intermittent laboratory tests into high-resolution, longitudinal data, Nutrio allows the tracking of subtle physiological trends. The system’s embedded algorithms identify patterns in your nutritional health and may guide users toward optimized dietary balance and athletic performance.
Focus - GLP-1 users3: a new need for metabolic visibility
GLP-1 therapies, initially developed for diabetes and now widely used for weight management, profoundly reshape the body’s nutritional and metabolic equilibrium. By reducing appetite and slowing gastric emptying, they can alter hydration, micronutrient absorption, and fat metabolism changes that are rarely monitored outside the clinic.
U-Scan Nutrio provides a simple, data-driven way to follow these transitions at home. By analyzing daily urine chemistry, it helps users understand how their body adapts to appetite suppression and rapid weight loss, while the Withings app visualizes results and delivers personalized guidance via Withings+.
U-Scan Calci Stronger support for proactive kidney health Kidney stones affect one in ten adults1 worldwide and are characterized by painful, unpredictable episodes often associated with excessive urinary calcium or chronic dehydration. 70-80% of these stones are caused by an excess of calcium in the kidneys2.
U-Scan Calci provides a continuous and proactive monitoring approach to renal health by tracking calcium levels, Bio-Acidity (urinary pH), and HydroStatus (specific gravity) three parameters that may be indicative of stone formation.
● Calcium levels Excess calcium in urine (hypercalciuria) is the primary driver of stone formation. U-Scan quantifies calcium excretion trends over time, identifying subtle peaks that can precede crystal nucleation.
● Bio-Acidity (Urinary pH) The acidity of urine governs how minerals crystallize. A consistently acidic pH favors uric-acid and calcium-oxalate stones, while an overly alkaline pH can lead to calcium-phosphate stones.
U-Scan measures daily pH variation to support dietary and hydration adjustments that restore balance.
● HydroStatus (specific gravity) Fluid intake directly affects urine concentration. By tracking this index continuously, U-Scan helps users maintain optimal dilution levels that naturally prevent mineral aggregation.
“We’ve miniaturized several complex laboratory processes into one of the harshest environments imaginable: the toilet. The result is a technological breakthrough designed to make prevention accessible, natural, and invisible.”
- Christelle Barakat, Director of Chemistry Research, Withings
U-Scan Calci enables a shift from reactive medical care to proactive prevention, bridging the gap between the home and the clinical lab.
A 100% French innovation with global impact
Developed entirely at Withings’ R&D headquarters in Issy-les-Moulineaux, U-Scan represents a multidisciplinary engineering milestone. Over seven years, teams of chemists, microfluidics engineers, optical physicists, data scientists, and designers collaborated to condense the complexity of a full-scale laboratory into a 135 mL pebble-sized module.
Protected by 32 patent families, U-Scan integrates:
● Microfluidic architecture for precise sampling and reagent handling.
● Optical detection modules for real-time biomarker quantification.
● AI-based calibration and signal interpretation for robustness over time and across users.
Beyond its technical achievement, U-Scan embodies Withings’ philosophy: that the future of health lies in embedding complex measurements into the simplicity of everyday life.
Design & engineering
Behind its simple appearance, U-Scan hides years of engineering to make laboratory science fit seamlessly inside a toilet.
● Optimized shape for precision: the current design is the result of dozens of iterations to find the perfect geometry able to intercept just a few drops of urine while guaranteeing a representative sample.
● Automated analysis cycle: once collected, the sample follows a complete microfluidic circuit from injection to optical reading before self-cleaning and resetting for the next use.
● Smart scheduling: users can program the analysis frequency and timing directly through the Withings app, adapting measurements to their lifestyle or specific health focus.
“Uscan is the result of years of research, ingeniously combining physics, chemistry, fluidics, mechanics, optics and intelligent data processing to enable effortless urine analysis.”
- Christelle Barakat, Director of Chemistry Research, Withings
Reinventing health tracking - without adding new routines
U-Scan extends the Withings connected health ecosystem, which already measures over 50 biomarkers spanning cardiovascular, metabolic, sleep, menstrual health, and activity domains.
“The future of health lies not in collecting more data, but in understanding the biological symphony behind it and doing so naturally, in real life.”
- Eric Carreel, Founder & Chairman, Withings
Withings’ approach is rooted in longitudinal science building daily datasets that reveal how the body adapts over weeks, months, and years. With U-Scan, the bathroom becomes the next frontier of health tracking, unlocking a dimension of the human metabolome that was previously invisible.
Pricing & Availability
U-Scan Nutrio and U-Scan Calci will be available beginning October 29, 2025, in Europe and the United States on withings website.
Subscription plans:
● Proactive Plan $379.95 (2 4 analyses per week, 1 cartridge, cleaning & charging station + Withings+ access)
● Intensive Plan $449.96 (5 7 analyses per week, 2 cartridges, cleaning & charging station + Withings+ access)
● Automatic cartridge replacement:
- Proactive Plan - $99.95 for 1 cartridge
- Intensive Plan - $179.96 for 2 cartridges
Each plan provides a 3-month supply of urine tests.
Withings+ Your personal health coach
Each U-Scan includes full access to Withings+, the premium app experience featuring:
● A Free Nutrition Consultation - Included in Withings+, redeem your free session with a registered dietitian, in partnership with Fay Nutrition4. Connect with over 2,300 dietitians across all 50 states, covering 30+ specialties such as diabetes, heart health, obesity, and sports nutrition. The dietitian will create a personalized, evidence-based plan that includes meal planning, food journaling, and nutrition education to help users reach their health goals.
● Health Assistant 24/7 an AI-driven companion that contextualizes biomarker trends and provides adaptive recommendations.
● Smart Trends & Health Improvement Score AI-generated insights based on multi-day urine data, translating molecular fluctuations into personalized advice on nutrition, hydration, and recovery.
About Withings
A pioneer in connected health since 2009, Withings (withings.com) empowers more than 15 million users worldwide and collaborates with leading academic and clinical research institutions. Its clinically validated ecosystem measures over 50 biomarkers from cardiovascular and metabolic data to sleep, activity, and now urinary analysis transforming daily life into a scientifically informed health experience.
1. nhs.uk/conditions/kidney-stones/
2. mayoclinichealthsystem.org/hometown-health/speaking-of-health/preventing-kidney-stones
3. In reference to GLP-1 users using the medication for obesity and not diabetes.
4. Fay Nutrition will be rolled out progressively on Withings+ starting October 29th through November in the US only
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