SOZO is the world’s first interactive healthcare device to use ImpediMed’s patented Bioimpedance Spectroscopy (BIS) technology to monitor a person’s fluid and hydration status and body composition.

SOZO®, the world’s most advanced, non-invasive BIS device, gives you a precise snapshot of fluid status and tissue composition in less than 30 seconds.
SOZO utilises ImpediMed’s bioimpedance spectroscopy (BIS) technology to accurately, non-invasively measure the most common substance in the body; fluid. BIS is a precise method and is considered the gold standard in bioimpedance technology.
BIS utilises 256 unique frequencies which are used to calculate fat mass and fat free mass. Total body water is calculated at both the intra and extra cellular level. All the data collected by SOZO has the ability to be managed in the secure web-based portal, SOZOhub.


Clinically proven
ImpediMed’s BIS technology has been studied in more than 500 peer-reviewed, published articles and over 40 different disease states or medical conditions.
ImpediMed pioneered the use of BIS technology, producing the first commercially available BIS devices in 1990. The patented, clinically proven BIS technology measures impedance at 256 different frequencies, from 3 kHz to 1000 kHz, and uses validated mathematical models to determine three pure resistance values in the body:
– Resistance at zero frequency = the free fluid outside of the body’s cells
– Intracellular resistance = the fluid inside the body’s cells
– Resistance at infinite frequency = the total body water including fluid inside of the body’s cells
These values form the foundation of all of the tissue and fluid output measures produced by ImpediMed’s BIS products.


Find out more about how the system works on our Health is Fluid Webinar Series
The core component is a physical medical device with hand and foot plates (SOZOtouch and SOZOstep), typically attached to a pedestal and controlled with an Android tablet pre-installed with the SOZOapp.
All user accounts, patient records, measurement data, and other calculated measures and trends are stored in the proprietary and secure MySOZO cloud.
Remote Data Management via MySOZO:
– Automatically trends results
– Patient grouping
– Setting baseline measurement
– Manage duplicates and set baseline measurements
– Simple user interface with Android tablet

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Using BIS technology, the ImpediMed device sends a low-level electrical signal through the body. In 30 seconds, SOZO can produce an accurate snapshot of your client giving you an auto-generated report covering:
– Total Body Water (TBW)
– Extracellular Fluid (ECF)
– Intracellular Fluid (ICF)
– Fat Mass (FM)
– Fat Free Mass (FFM)
– Hydration Index (Hy-DEX)
– Skeletal Muscle Mass (SMM)
– Active Tissue Mass (ATM)
– Extracellular Mass (ECM)
– Protein & Mineral
– Phase Angle
– Basal Metabolic Rate (BMR)
– Body Mass Index (BMI)
– Cole Plots Displaying Raw Impedance Data
All these results are automatically trended so you can see the progression of your patient/client and monitor easily any changes from baseline scores.


ImpediMed’s BIS technology has been studied in more than 500 peer-reviewed, published articles and over 40 different disease states or medical conditions.
These studies have demonstrated the utility of BIS in monitoring fluid status and tissue composition for multiple purposes including the management of chronic diseases.
– Birzniece et. al. (2015) A Critical Evaluation of Bioimpedence Spectroscopy in estimating body composition during GH Treatment: A comparison with bromide dilution and dual X-ray absorptiometry. 172.1 p21-28
– Thomson et. al. (2007) Good agreement between bioelectrical impedence and dual-energy X-ray absorptiometry for estimating changes in body compostion during weight loss in overweight young women.
– Moon et. al. (2009) Total body water changes after an exercise intervention tracked usingbioimpedance spectroscopy: a deuterium oxide comparison


Measurements can be done daily
Applied for;
– Hydration status and management
– Population health management
– Personal training, strength and conditioning
– Research
– Nutritional planning intervention
– Sports science
1. Patient removes shoes and socks, any jewellery and metallic objects on their person inc. watches and mobile devices
2. The clinician selects MEASURE. From here the patient stands still whilst the device sends the 256 frequencies through the patient
3. The measurement process takes approximately 30 seconds


Tablet – Samsung Galaxy Tab® A:
10.1 in / 25.7 cm WUXGA (1920 X 1200) TFT LCD 1.6 GHz Octa Core Processor 2.0 GB RAM 8.0 MP AF 7,300 mAh Battery 16 GB Memory


Weight Capacity:
375 lb / 170 kg


Technical Specifications:
Bluetooth®, Wi-Fi® Power: 24 V DC, 1A power supply


SOZO Device: 10.0 lb / 4.5 kg
SOZOsupport Stand: 25.5 lb / 11.6 kg


SOZOtouch: 13.0 x 6.8 x 2.9 in / 33.0 x 17.2 x 7.4 cm
SOZOstep: 17.4 x 12.7 x 2.2 in / 44.2 x 32.3x 5.7 cm
SOZOsupport Stand (with plates): 17.5 x 18.4 x 41.5 in / 44.5 x 46.7 x 105.4 cm


Sensors:  8 stainless steel electrodes
Frequency Scan: 3 to 1000 kHz (256 frequencies)
Measurement Speed: 30 seconds for 256 frequencies


Measurement FAQs


Can the patient feel the SOZO measurement when it is taken?
No, the electrical current used is at a very low level and imperceptible.


What if a patient cannot stand on the device?
The SOZO system can be configured to test patients in either standing and seated positions. It is strongly recommended that patients take readings from the same position each time to enable accurate comparisons over time.


What are the steps to take a high-quality SOZO measurement?
In order to get a high quality measurement, the following steps should be taken:
– Ask the patient to remove all metal jewelry and portable electronic devices
– Dampen the patient’s hands and feet
– Ask the patient to stay still during the 30 second measurement


Technical FAQs
Will I get a tablet with my purchase of a SOZO device?
Yes, a tablet will be provided. The SOZOapp (application) will be pre-loaded on the tablet.


Is SOZOapp compatible with apple products?
The SOZOapp does not currently operate on Apple product platforms. This includes, but is not limited to mac, iPad, iPhone, Apple Watch, or any machine running an Apple iOS.


Do I need to update my SOZOapp?
Customers will be notified of SOZOapp updates when they are available. ImpediMed technical support can help complete the updates if needed.


Does the tablet support Mobile Device Management (MDM)?
Yes, the SOZO tablet and SOZOapp support typical MDM systems for securing the devices.


Where does SOZO store data?
All data are stored on secured infrastructure hosted by ImpediMed through Amazon Web Services. No data are stored in the tablet (SOZOapp) or the SOZO device itself.


Does SOZO encrypt data?
All data sent between SOZOapp and and all data at rest are encrypted using SSL/HTTPS. All data sent between SOZOapp and the SOZO device are encrypted using standard Bluetooth® encryption.


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