Hydration Science Behind MX3

The MX3 Hydration Testing System is the world’s first point-of-care diagnostic platform that uses saliva to measure important health markers in real-time. By unlocking the potential of saliva for personal testing, MX3 users can conveniently measure and track aspects of their own physiology anytime without visiting a doctor or waiting for a lab to provide results.

Key to the system is the world’s first electrochemical test strip for salivary osmolarity (SOSM) testing. SOSM has been proven to be a sensitive and reliable marker of hydration status. Measurements with the MX3 Hydration test strip can reliably characterize hydration status in seconds—anytime and anywhere.

MX3 performs the same osmolarity test as a much larger, heavier, and more expensive laboratory osmometer. MX3 truly puts the power of a lab in the palm of your hand.

Transforming Testing with Saliva


Over the last 20 years, researchers have identified saliva as a rich source of biomarkers that can be used to monitor health and wellness, including hormones, metabolites, nucleic acids and more. Collection of saliva is safer and less invasive than blood or urine, making it an excellent candidate for field testing of health status without the need for trained medical staff.

Saliva analysis is not without challenges. Unlike blood, which is tightly regulated by the body, saliva can vary greatly in volume, viscosity, consistency and acidity. Additionally, the concentration of most analytes is much lower in saliva than other bodily fluids, mandating high sensitivity-detection techniques. Because of these challenges, very few saliva tests have made their way out of the laboratory. Until now.

Braden Currie Crossing MX3 Banner

MX3’s Innovation

MX3 has spent years developing a system that makes measurement of raw saliva fast and reliable. Key breakthroughs in a technology sequence of microfluidics, electrochemistry, signal processing and machine learning address the unique complexities of saliva.

The result is a world-first electrochemical saliva analysis system that provides personalized, laboratory-grade, actionable information in the palm of your hand.

Simon Jarasport MX3 Testing Hydration

The Critical Importance of Hydration

Hydration impacts every physiological system in the body. Proper hydration is essential for optimal physical and mental performance. Despite its importance, hydration is very difficult to assess reliably and conveniently.

MX3 started its hydration development by focusing on salivary osmolarity (SOSM) as a proven marker of status. Multiple studies support SOSM, including its advantages over urine tests and other common assessment techniques for determining acute dehydration. We are innovating further today to enhance our perspectives on hydration and other critical health markers.

Order Now

Saliva Osmolarity: MX3 LAB vs Laboratory Testing

Testing SOSM with the MX3 LAB is faster and more convenient than using a Laboratory Osmometer. SOSM values with the MX3 LAB have an excellent correlation with laboratory measurements. 

MX3 Testing System
MX3 Testing System
Laboratory Testing
Laboratory Testing
Equipment SizeEquipment Size

MX3 Testing System

8.4 in x 1.8 in x 1.0 in
Handheld - Portable

Laboratory Testing

12 in x 18 in x 18 in
Table top - not portable

Electricity RequirementsElectricity Requirements

MX3 Testing System

Rechargeable battery lasts
up to 1000 measurements.

Laboratory Testing

Must be plugged in

Testing TimeTesting Time

MX3 Testing System

<1 minute from tongue to result

Laboratory Testing

Collection, transport and laboratory
measurement can take hours or days


MX3 Testing System

Excellent correlation between
methods (R2 = 0.945)

Laboratory Testing

Excellent correlation between
methods (R2 = 0.945)


MX3 Testing System

$1,449.00 MX3 pro system
$0.50 per test (strip)

Laboratory Testing

> $10000 + $1 per test


MX3 Testing System

Anytime, anywhere

Laboratory Testing

Restricted to a laboratory


Use the MX3 LAB anytime, anywhere. Simply take a quick saliva or sweat sample on the field or in the locker room.


MX3 is scientifically proven to measure biomarkers from saliva as accurately as a laboratory osmometer.


Your hydration level is recorded within seconds of taking a saliva measurement, and results immediately upload to your app.


The LAB can be used over and over by one person or entire teams. Just replace the disposable test strip after each measurement.


Test strips load easily into the LAB, and saliva measurements are made by simply placing the strip on the tip of the tongue.


The LAB can be used with or without Bluetooth or Internet access. Measurements can be taken anytime for immediate readings, then stored for later upload.

Sweat Sodium Testing

MX3’s Sweat Sodium test measures sodium levels, so you can replace lost electrolytes and customize your hydration strategy with the right fluids. With MX3, you can test, track and hydrate effectively to optimize your performance and reduce injury.

The MX3 Hydration Testing System uses a single device to run two different tests in real-time that tell you how much fluid to drink and what kind of fluid will best replace the electrolytes you lose during exercise.

Order Now

Order Now: Sweat Sodium Testing

Connect with MX3

Ready to start testing hydration? Want to learn more about our science, our products or our company? Sign up now to keep in touch.

Error Message