Bioimpedance spectroscopy (BIS) is an advanced, non‑invasive technology that uses electrical currents passing through the body to accurately measure fluid distribution and body composition. This detailed data can help lymphoedema practitioners with early detection, assessment and timely intervention for lymphoedema.
Unlike traditional assessment methods (like tape measurements or scales), BIS can detect changes in fluid levels before swelling in visible, identifying early lymphatic system changes that may signal the onset of lymphoedema. BIS provides objective, quantitative data that clinicians can use to track trends over time and make informed decisions about prevention and management.
The SOZO® Digital Health Platform, created by ImpediMed, is a device that uses BIS technology to provide clinicians with a rapid and comprehensive view of a patient’s fluid status and body composition.
The device delivers in‑clinic results in under 30 seconds without invasive procedures. The SOZO measures fluid and tissue data, including:
This combination of data allows for precise tracking of changes in the internal environment throughout the care journey.
The L‑Dex® score is one of the most important parts of a SOZO scan when it comes to lymphoedema monitoring. It measures how much fluid is in a limb compared to a healthy baseline. Because the SOZO detects changes when they are still subtle (as little as 2 tablespoons difference), this can give your clinician time to intervene before swelling becomes more significant.
Normal L‑Dex scores fall within a specific range, and changes beyond this range can indicate early lymphatic change, even if you don’t feel any different.
Hunter Rehab Hub is one of very few providers of SOZO technology in the region, servicing patients across Newcastle, Lake Macquarie, Maitland, Port Stephens and the Hunter Valley.
At Hunter Rehab Hub, SOZO scans are integrated into our comprehensive assessment services to provide:
This proactive approach helps patients stay ahead of complications, improves functional outcomes, and enhances quality of life.
Your SOZO questions answered
A SOZO scan is a quick, non-invasive assessment that uses bioimpedance spectroscopy (BIS) technology to measure fluid levels and body composition.
Yes, the device uses low-level electrical currents that are considered safe for most individuals. No, the signal is imperceptible and does not cause pain or discomfort.
SOZO scans may be recommended as part of your care plan to establish a baseline before cancer treatment, monitor for early signs of lymphoedema, track fluid changes over time, or assess body composition as part of a broader health and rehabilitation plan.
While SOZO assessments are safe for most people, they may not be suitable for everyone. Bioimpedance spectroscopy uses a low-level electrical current, so the scan is generally contraindicated for individuals with certain implanted electronic medical devices, including pacemakers, implantable cardioverter defibrillators (ICDs), and neurostimulators.
SOZO assessments may also be unsuitable during pregnancy, as the body composition reference data and fluid measurements have not been validated for pregnant individuals.
The scan itself takes approximately 30 seconds. Results are generated immediately after the scan and can be reviewed with your clinician during your appointment.
The SOZO measures how the low-level electrical currents move through body tissues. Changes in extracellular fluid can be detected before visible swelling develops, helping clinicians identify potential lymphoedema at an earlier stage.
Yes, repeated scans can help clinicians track changes in tissue fluid levels and evaluate how a person is responding to lymphoedema management strategies.
Your clinician will explain the results and determine whether further assessment, close monitoring, or early intervention is recommended.