Disclaimer and limitations
During heat training, be sure to follow qualified medical advice. We recommend using the services and supervision of an experienced coach. If safety precautions are not followed, there is a risk of heat-stress. Athletes and coaches need to be aware that for heat-related training, training too hot is not better. During heat training, if you experience any dizziness, nausea or a high level of discomfort, immediately stop and cool. Listen to warning signs from your body, regardless of the temperature reading from your CORE sensor and regardless of if you have comfortably exercised at that temperature before.
- For users 65 years and older, the temperature detected by the CORE sensor may be lower than the actual body temperature.
- The CORE device has not been formally tested on pregnant women. Temperature patterns may deviate from the user's temperature range when not pregnant.
Use cases in validation
Some usages, either for sport or extreme situations, are still being validated internally with the help of our research partners. CORE is not yet recommended for the following cases, as the accuracy will be lower.
- Work safety
- Medical use
Operating limits for CORE
The operating-temperature limits of the CORE device are between -10°C and 80°C (14–176°F). The lower temperature limit is defined by the glue used in the device becoming brittle. The upper limit is defined by the plastic starting to melt. Additionally, the battery will age faster above 50°C/ 122°F.
Please note that air temperatures above 65°C/ 149°F pose an acute danger to the user.
CORE is not a medical device
It is not intended to diagnose, treat, cure, or prevent any disease or health condition. It does not have FDA or medCE approval.
CORE should be used by healthy adults in a stable environment and is only meant to inform you about your overall wellbeing. No medical advice can be concluded from the measured temperature data, and it cannot replace the services of health care professionals. Deviations from the normal body temperature range should be investigated by a health care professional and no conclusion regarding your health can be drawn from a core temperature that is within the healthy range. Never disregard professional medical advice or delay in seeking it because of the temperature measurements by CORE.
The use-case scenarios that are shown on any printed or digital material from CORE or greenTEG are only used to inform the public about our research topics. It does not prove the current application of the CORE in these fields.
If the CORE causes any redness or skin irritation, remove the product immediately.
We are not responsible for any decisions, and potential subsequent incidents, you or someone that takes care of you might make, based on the measured core body temperature by CORE.
CORE for medical use in the US
The information on in this section is meant to inform all US based users of CORE, an innovative clinical thermometer, about its safe use and potential risks. As of October 6, 2020, the CORE Medical Temperature Monitoring System does not require a formal EUA pre-launch review process at this time and may be marketed in the USA in support of this current Public Health Emergency (COVID-19) in accordance with the current FDA guidance and requirements.
CORE can be used as a medical thermometer by individuals to self-monitor their core body temperature in both clinical and non-clinical settings. The CORE thermometer can either be worn with medical-grade adhesive patches (see right picture) or by clipping it onto any heart rate monitor (HRM), chest strap, arm strap (see picture left) or even by attaching it to bras. With proper body placement, the CORE thermometer allows for highly accurate core body temperature monitoring (Mean Absolute Deviation of 0.21°C / 0.36°F).
The CORE thermometer connects to a user-supplied smart phone using a standard Bluetooth protocol. The CORE thermometer also has an integrated alarm function, which warns the user when crossing a user defined core body temperature threshold. Furthermore, our new clinical thermometer is capable of recording data for up to 48 hours, even if it is not connected to the smart phone. Data download is currently not enabled for CORE.
The CORE thermometer is not intended to replace any primary temperature screening processes utilizing FDA approved medical thermometers. However, CORE is an ideal supplement to routine medical grade temperature screenings, such as those conducted prior to admission, or dismissal from/to any facility, building or regulated public areas.
The CORE device is only for sale and use under the Food and Drug Administration’s Emergency Use Authorization provisions (COVID-19).
Fact sheet for healthcare providers and patients
As set forth in the EUAs, the following fact sheets for patients and healthcare providers is to be provided as additional information and as a package insert supplement to the labeling for US customers. The following information contains warnings for all US based users of CORE and contains safe use guidelines and information regarding potential risks and hazards:
- Do not attempt to clean or sanitize CORE device in any other manner than set out in the "Maintenance" section of the CORE Important Product Information document.
- Do not expose CORE device to direct sunlight or excessive heat. The recommended operational temperature range is between 10 and 40°C (55–104°F).
- Do not use CORE if any of the conditions apply which are specified in the "Device Warnings" section of the CORE Important Product Information document.
- The sensor should be free of visible defects, discoloration, and damage. If the sensor is discolored or damaged, discontinue use. Never use a damaged sensor or one with exposed electrical circuitry.
- Only use CORE as directed in the instructions provided in the CORE Important Product Information document.
- Do not use CORE in any manner other than that specified in the CORE Important Product Information document. Do not attempt to measure a person's body temperature in another body location other than those specified in the official supporting documentation of CORE.
- Note that alteration at the skin surface such as oils, make-up or tattoos may cause inaccuracies in temperature estimation.
- Users with known skin conditions or sensitive skin should avoid using the medical grade adhesive patches. If a user experiences irritation as a result from using the medical grade adhesive patches, they should immediately remove the patches from the body and only use CORE with either a heart rate belt, chest strap or arm strap.
- CORE should not be used to measure a person's body temperature instantaneously and in no way is intended to replace routine temperature screening. The user must be aware that CORE has a thermal equilibration time (time needed to acquire a stable reading) of up to 5 minutes before it can display the user's body temperature accurately.
- Accuracy of temperature estimation can be affected by profuse sweating, superficial wounds or injury at the measurement site.
- The back side of CORE device must be kept clean and intact. Any damage, dust or dirt can result in an erroneous temperature reading and might cause skin irritations.
- In case water enters the CORE device, do not use or attempt to charge the device and contact your dealer immediately for technical service.
- Do not use CORE device in any environment with a strong electromagnetic field.
- Handle CORE device with care and avoid any physical percussion such as knocking the device against hard surfaces or dropping it. Do not use CORE device if damaged or not in proper working condition.
- Users of CORE should be aware that, in the case of elderly people (≥65 years old), the temperature detected may be lower than the actual body temperature.
- CORE device shall not be used by children without the supervision of an adult. Keep the CORE out of the reach of children or persons with limited sensorimotor skills. Small parts may be ingested or inhaled.
- Use of the CORE device does not substitute for professional medical consultation as the CORE is not an FDA approved medical device. Tell your physician what type of thermometer you are using and where on the body the temperature reading was taken.
- Note that there is no single "normal" temperature which is valid for everyone. Individual temperature varies according to factors including, but not limited to, a person’s sex, BMI, age, outside temperature, and physical conditions.
- The CORE device has not been formally tested on pregnant individuals. Temperature patterns may deviate from the user's "normal" temperature range, in a non-pregnant state.
- Due to thermoregulatory processes of the body, a person's CORE temperature does not increase evenly throughout the body. For this reason, it can take up to 1 hour for CORE to report changes in body temperature.
- In the event that the CORE app is closed, CORE device is equipped with enough internal storage to buffer temperature data up to 48 hours.
- Failure to observe above-mentioned precautions may lead to either overestimated or underestimated body temperature readings.
- CORE is not a medical device and cannot be used for medical diagnoses. Note that CORE cannot be used as a replacement for the standard of care, but CORE is a perfect supplement to routine medical grade temperature screenings, such as those conducted prior to admission, or dismissal from to any facility, building or regulated public areas.
- Note that physical exertion can elevate the body temperature. Any misinterpretation of body temperature readings by the user as well as any actions taken as a result of this misinterpretation, cannot be attributed to product malfunctions.
- Note that the CORE device and CORE app are subject to frequent updates. Users of CORE are responsible for regularly updating their CORE device and CORE app to their respective latest versions.
Battery Safety Instructions
The following precautions are necessary to ensure safety when using and storing the CORE sensor:
- replacement of a battery with an incorrect type that can defeat a safeguard (for example, in the case of some lithium battery types);
- disposal of a battery into fire or a hot oven, or mechanically crushing or cutting of a battery, that can result in an explosion;
- leaving a battery in an extremely high temperature surrounding environment that can result in an explosion or the leakage of flammable liquid or gas; and
- a battery subjected to extremely low air pressure that may result in an explosion or the leakage of flammable liquid or gas.