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Continuous Glucose Monitoring (CGM) Program2024-03-06T11:02:40-05:00
CGM Sensor


Continuous Glucose Monitors [CGMs] are a more recent breakthrough in biomedical technology. In a minimally invasive way, CGMs help individuals to track blood sugar in real time.  While the only perfectly accurate glucose reading is by getting a blood glucose test from a lab, wearers of a CGM sensor can gain meaningful information regarding how their unique metabolism responds to food combinations and stress, sleep, and exercise.

Theia app and sensor image for TWIHW CGM program

Frequently Asked Questions

  1. Are there any supplements that might alter my results? Taking ascorbic acid (vitamin C) supplements while wearing the Sensor may falsely raise Sensor glucose readings. Taking more than 500 mg of ascorbic acid daily may affect the Sensor readings, which could cause you to miss a severe low glucose event. Ascorbic acid can be found in supplements, including multivitamins. Some supplements, including cold remedies such as Airborne® and Emergen-C®, may contain high doses of 1000 mg of ascorbic acid and should not be taken while using the Sensor. See your healthcare professional to understand how long ascorbic acid is active in your body. Consider avoiding these supplements while you’re collecting your data with the CGM.
  2. Why is my finger prick glucose reading different than the sensor glucose reading? They are likely to be different because they measure different things. The sensor glucose readings come from the interstitial fluid [ISF], the thin layer of fluid that surrounds the cells of the tissues beneath your skin, not from your blood. There is a 10 to 20-minute delay in ISF glucose response to changes in blood glucose. Glucose readings on ISF have been proven to reliably reflect glucose levels. [https://www.freestylelibre.com.au/difference-between-glucose-interstitial-glucose]
  3. Is it safe to wear the CGM during an ultrasound/high-intensity electromagnetic technology/radio frequency?  CGMs should be removed before the following exposure: Magnetic Resonance Imaging (MRI), Computed Tomography (CT) scan, or high-frequency electrical heat (diathermy) treatment. The effect of MRI, CT scans, or diathermy on the performance of the System has not been evaluated. The exposure may damage the Sensor and impact the device’s proper function, which could cause incorrect readings. Ultrasounds would not classify as any of the above, so this would be a personal choice if you wish to risk it. If you wear it and it becomes faulty, please get in touch with Theia to get you a complimentary replacement. 
  4. How does a Sauna/ Heat/ Cold affect CGM’s?                                                                                        Saunas, hot, and cold temperatures may show more significant variability in your glucose responses due to inaccuracies from the environment, humidity, or temperature itself. The sensor can be used in showers, baths, saunas, and cold plunges, though the readings may not be accurate.
  5. What is the EMF exposure with the Freestyle Libre 3?                                                                       The communication between the App and Sensor during an activation scan is a short-range Near Field Communication (NFC) method, which makes it difficult to interfere with or intercept during transmission. The communication between the App and Sensor for glucose data is a standard Bluetooth Low Energy (BLE) connection. The radio frequencies it operates are: 2.402-2.480 GHz BLE; GFSK; 4.6 dBm EIR. Bluetooth devices are extremely low-powered, typically about 2.5mW, which is less than a cordless phone and approximately 100 times less than the maximum power of a mobile phone. The safety of radio waves has been extensively studied for more than 50 years. Numerous independent expert panels, government agencies, standard-setting organizations, and health authorities worldwide have reviewed this large and growing body of research. All have reached the same general scientific conclusion: no established evidence of any adverse health effects from exposure to radio waves within the limits applied to wireless communications. Concerning radio frequency emissions and wireless technology and health, the general conclusion from the World Health Organization (WHO) is, “Despite extensive research, to date, there is no evidence to conclude that exposure to low-level electromagnetic fields is harmful to human health.” Summary of health Effects – Key point 6  http://www.who.int/peh-emf/about/WhatisEMF/en/index1.html  

         *Inside of your Theia app is an FAQ section with more questions and answers