Fever monitoring
patient monitoring

Fever monitoring performed by Wearable Technologies

This use case describes the use of wearable technologies such as a Core Body Temperature Monitor to measure accurately, remotely and non-invasively the body temperature and notably during fever episodes.

Why using Core Body Temperature as a vital parameter to perform fever monitoring?

patient monitoring

Core body temperature refers to the temperature of the body’s organs. It fluctuates following physiological processes, such as circadian cycles, menstruation, illness or physical activity. Core body temperature is a vital parameter for determining an individual’s health status.

greenTEG offers the world’s first core body temperature sensor for continuous and non-invasive measurements.

Therefore, Core body temperature is suited for Fever Monitoring, Patient Monitoring and for Heat stress Prevention for Workplace Health & Safety application. 

Other devices available on the market can be used to estimate core body temperature via skin surface temperature. However, due to the complexity of thermal regulation and environmental conditions, this estimate does not come close to the accuracy and reliability of CORE body temperature sensor.

Example of Core Body Temperature monitoring for Fever detection, compared to a reference e-pill measurement.

Why choosing Core Body Temperature sensor for fever monitoring?

Features & Benefits

  • Get early warning signs of an elevated body temperature.
  • Monitoring the core body temperature of the general ward patients, relieving the healthcare system.
  • Reduce the probability of erroneous readings.
  • Gain additional insights into the progression of patient.
Core body temperature monitor

Core Body Temperature for Remote and Non-invasive Patient Monitoring

fertility tracking

Changes in core body temperature often provide insight on health-related problems prior to the appearance of other symptoms. Therefore, accurately monitoring the core body temperature of patients can help to identify health issues of patients at an early stage.

N.B.  At greenTEG, we have realized that our technology could be useful to fight the COVID-19 crisis.

To support current medical research, CORE has obtained the Emergency Use Authorization, EUA, for the US. 

The patented CALERA® technology has been developed for more than 7 years. It is based on greenTEG’s heat flux sensor and targeted for the integration into the wrist-, upper-arm, and chest-worn wearables. The technology has been proven suited for mass manufacturing, currently seen with CORE, which so far has been manufactured in volumes exceeding 10,000 devices.

The clinical-grade accuracy according to ISO 80601-2-56:2017 has been validated by different hospitals and Universities.

OEM integration Wearables

External & Internal validation studies (wrist-worn, chest-worn and upper-arm validation studies) are available:

In addition, a comparison of tympanic with core body temperature in stroke patients was performed by Ajčević et al. (2022) and reported in the Sensors journal. This work highlights the potential of core body temperature monitoring performed with greenTEG’s technology as a method to track reliably stroke patients body temperature compared to standard temperature measurements. [1] Find out more here.

Core Body Temperature for Early Detection of Health-Related Issues

Many significant health issues leave traces in a person’s natural day-night temperature cycle, also known as the circadian cycle. The simplest way to monitor the circadian cycle is to measure core body temperature.

With greenTEG’s sensor, core body temperature can be measured easily and without having a significant impact on the daily routines of the subject. Changes in the circadian rhythm point to many health issues. Researchers are using our sensors to investigate; jetlag, narcolepsy, insomnia, sleep quality, burnout, Alzheimer’s, Parkinson’s, ovulation status, and many more.

Elevated body Temperature monitoring

Core Body Temperature for Hyperthermia detection

workplace health and safety monitoring

Monitor the core body temperature of your workforce for early signs of potential issues, protect at risk healthcare workers in hospital and nursing homes, and get back to work with confidence reassuring staff with a safe and healthy workplace.

Discover more with the two use cases:

Recommended readings to go further

  • Discover all the use cases related to our technology, here.
  • Explore our product line, here.
  • Discover all the peer-reviewed publications using our technology, here.


[3] Ajčević, Miloš, et al. “A Novel Non-Invasive Thermometer for Continuous Core Body Temperature: Comparison with Tympanic Temperature in an Acute Stroke Clinical Setting.” Sensors 22.13 (2022): 4760.