Frequently Asked Questions

If patients experience any difficulty removing the sensor from their skin, these products and techniques may help:  

General Removal Techniques 

• Loosen edge of adhesive with fingernail and use products listed below if necessary.^1,2  

• While removing tapes, use fingers of opposite hand to push skin down and away from adhesive. Continue to move fingers on skin towards adhesive as it is removed.²  

• ‘‘Fold back’’ technique: Remove adhesive slowly, at low angle, folding back on itself. ²  

• ‘‘Stretch and relax’’ technique: Films that stretch (e.g., IV3000 or Tegaderm) may be stretched horizontally away from the centre (opposite of the fold back technique) while walking fingers under the dressing to continue stretching it. ²  

• Use adhesive removal wipes to rub the skin under the tape towards the adhesive as it is removed. This helps loosen adhesive from skin and may help reduce pain with removal.¹  

For detailed step-by-step instructions on how to use the Dexcom Continuous Glucose Monitoring (CGM) System, please refer to the User Guides:

User Guide G6, User Guide G7, Dexcom ONE+ 

View the downloadable "Sensor Adhesion Best Practices" document, which outlines the step-by-step process for how to insert and remove a Dexcom sensor patch. 

Yes, Dexcom systems are indicated for children as young as 2 years old. 

Dexcom Sensors are manufactured with a special adhesive to help them stick to patients’ skin after insertion. Adhesive supplements may also be used.  

• Liquid adhesive agents can be used with the sensor adhesive patch.^1,3 Suggestions for patients when using liquid adhesive agents are to:  

1. Create an empty oval on the skin with the liquid adhesive product.  

2. Let skin adhesive dry.  

3. Insert sensor on clean skin in centre of oval.  

• Additional adhesive patches or tape can be applied over the sensor adhesive patch. ^1,2 Suggestions for patients when using adhesive patches or tapes are to:  

• Cut a hole in the adhesive patch or tape to fit around transmitter.  

• Cut the adhesive patch or tape into strips to use ‘‘picture frame’’ technique around sensor adhesive patch.^1,4  

For detailed step-by-step instructions on how to use the Dexcom Continuous Glucose Monitoring (CGM) System, please refer to the User Guide:

User Guide G6, User Guide G7, User Guide Dexcom One+ 

Dexcom does not recommend, endorse or warrant any third-party products, including adhesive supplements and removal products. 

View the downloadable "Sensor Adhesion Best Practices" document, which outlines the step-by-step process for how to insert and remove a Dexcom G6 sensor patch. 

Until recently the only way to know your glucose levels was to prick your finger. Whilst finger pricking is able to measure your current glucose level at the time, it can’t predict where your glucose levels are heading or how quickly. So, you end up having to finger prick again and again to try and build up a picture. Many people grow frustrated at still being unable to predict hypoglycaemia and hyperglycaemia, or keep their glucose in range.

Now, with the increase in use of real-time CGM systems, this has all changed.

CGM systems, such as Dexcom G6, G7, and Dexcom ONE+, measure glucose levels every 5 minutes and send the readings via a small transmitter to a touch-screen receiver or smartphone†. This shows you how your glucose levels are changing, allows you to predict what they’ll do next and alerts you if levels are heading too high or too low – all without finger pricks* or scanning.

You can even share your Dexcom G6, G7, and Dexcom ONE+ glucose data^§ with friends and loved ones via the ‘Share’ feature in the Dexcom app so that they can stay connected as your circle of support.

Direct to Watch connects the Dexcom G7 sensor directly to your patients’ Apple Watch using Bluetooth. When Direct to Watch is active, your patients’ sensor sends CGM data right to their watch, so they don’t need their phone to see their glucose numbers.  

To view a list of compatible Apple Watches, click HERE.

Yes. Dexcom G7 can display glucose on multiple devices including your patients’ phone, smartwatch, and Dexcom receiver or connected AID (Automated Insulin Delivery) system simultaneously and independently of each other.  

Dexcom G7 has three Bluetooth channels: 

1. Smartphone - which allows glucose data to be sent to the Clarity^† and Follow^‡ apps 
2. Smartwatch 
3. Dexcom Receiver OR connected AID (Automated Insulin Delivery) system 

To view a list of compatible Apple Watches, click HERE.

* Smart device sold separately. To view a list of compatible devices, visit dexcom.com/compatibility 

† An internet connection is required to send data to Dexcom Clarity.

‡ Separate Follow app and internet connection required. Users should always confirm readings on the Dexcom CGM System app or receiver before making treatment decisions. 

To use Direct to Watch, your patients must have the following: 

• Apple Watch 6 or later, running watchOS 10 or later 
• iPhone running iOS 17 
• Must have Dexcom G7 App version 2.1 

To view a list of compatible Apple Watches, click HERE.

See dexcom.com/compatibility for more information. 

To use Direct to Watch you must have one of the following Apple Watch models, running watchOS 10 or later: 

Apple Watch Series 6 

• Apple Watch Series 7 
• Apple Watch Series 8 
• Apple Watch Series 9 
• Apple Watch SE (2^nd Generation)
• Apple Watch Ultra 
• Apple Watch Ultra 2 

For help identifying your Apple Watch model visit https://support.apple.com/en-us/HT204507

For other device compatibility information please visit https://www.dexcom.com/compatibility.

No. A cellular plan isn’t required to connect a user’s Dexcom G7 sensor to your watch. The sensor connects to their Apple Watch using Bluetooth.

To use Direct to Watch, your patients must have the following:

• Apple Watch 6 or later, running watchOS 10 or later

• iPhone running iOS 17

• Must have Dexcom G7 App version 2.1 or later

See dexcom.com/compatibility for more information.

To view a list of compatible Apple Watches, click HERE.

No, Direct to Watch can’t share real-time glucose data to Health App partners like Sugarmate or Happy Bob. When a user is back with their phone* their glucose data will be backfilled to the partner app.

To view a list of compatible Apple Watches, click HERE.

*Smart device sold separately. To view a list of compatible devices, visit dexcom.com/compatibility. 

Patients will see their current glucose reading, trend arrow, trend graph, and alerts. Tap the trend graph to see sensor readings over the past 1, 3, or 6 hours.  

To view a list of compatible Apple Watches, click HERE.

Share is not available on smartwatches. Your smartwatch can’t send information to followers.

The primary user must use their Dexcom G7 phone app to use Share and Follow^*. Their phone must also be kept in Bluetooth range of the sensor for the Share and Follow feature to remain in use as well. 

We continuously optimise and look to improve our capabilities alongside our partners. We frequently communicate new features and updates to our applications. Get your patients started on Dexcom CGM today to be among the first to learn about future releases.

To view a list of compatible Apple Watches, click HERE.

* Separate Follow app and internet connection required. Users should always confirm readings on the Dexcom CGM System app or receiver before making treatment decisions.

No, Direct to Watch^* is not available on Dexcom G6. As we continue to build out Dexcom G7’s connected partner ecosystem we encourage you to upgrade patients to Dexcom G7.

*Smart device sold separately. To view a list of compatible devices, visit dexcom.com/compatibility.

If your patient is having trouble with Direct to Watch, please have them reach out to Dexcom Technical Support for product troubleshooting or replacement inquiries. 

Dexcom Technical Support 
Product troubleshooting or replacement inquiries. 
0800 031 5761 
Available 24 hours a day; 7 days a week 

The Dexcom Clarity app highlights glucose patterns, trends and statistics. You can even get weekly notifications with the Dexcom Clarity reports app. This data can be shared with the diabetes healthcare team to monitor changes remotely.

View on desktop or download the mobile app from the App Store or Google Play store for quick access on a smart device.^†

Register your clinic at https://clarity.dexcom.eu/professional/registration. Whoever completes the registration will be considered the account administrator with full ability to add and manage staff accounts.

Users might need administrator privileges to install software on their computers.  

A broadband network connection of 1.5 Mbps or more is required to install the software from the web, upload data or view the online User Guide.  

It is recommended that you use an appropriate firewall programme and an anti-virus programme on your computer to protect against viruses, malware and unauthorised access to and use of your computer and the information stored, processed and transmitted by it.  

Dexcom Clarity supports the following system configurations:  

Windows 7, 8 or 10 

• 1.3 gigahertz (GHz) processor and 1 gigabyte (GB) free RAM with 100 megabytes (MB) free disk space 

• Microsoft .NET Framework 4.6.1 or greater, full version 

• Display resolution of 1024 x 768 pixels or greater 

• Chrome 53, Firefox 47, Internet Explorer 11 run in desktop mode or Microsoft Edge 

• USB 2.0+ port to connect the USB cable to upload a Dexcom receiver 

Mac OSX 10.10, 10.11, 10.12 or 10.13 

• 2.3 gigahertz (GHz) processor and 4 gigabytes (GB) free RAM with 100 megabytes (MB) free disk space 

• Display resolution of 1280 x 800 pixels or greater  

• Safari 9.1 or greater, Chrome 53 or Firefox 47 for Mac OSX 

• USB 2.0+ port to connect the USB cable to upload a Dexcom receiver 

Optional computer configurations:  

• Mouse or trackpad  

• A PDF reader (for example, Adobe Reader) for viewing, saving, and printing the reports  

• An Excel spreadsheet viewer (for example, Microsoft Excel or Excel Viewer)  

• Printer, for printed copies of reports  

To run Dexcom Clarity, your network must allow the following outbound network traffic, which might require changes to proxy and network configuration:  

• dexcom.com (and all subdomains) on port 443  

• agent.mydiabetesdata.com with DNS loopback support to 127.0.0.1

If your clinic has a Dexcom Clarity account, add the patient to your patient list, then click Share data to view, print, or email a share invitation. The patient enters the Sharing Code from the invitation either into their personal Dexcom Clarity account or into their Dexcom Clarity App. Once sharing is established, it continues until the patient or clinic decides to stop sharing and manually stops it within Dexcom Clarity.  

If your clinic does not have a Dexcom Clarity account, patients can provide a Share Code generated from the Dexcom Clarity App for your clinic to enter at https://clarity.dexcom.eu/  or you can guest upload a Receiver from the same link.

You can save or print all reports from Dexcom Clarity for up to 90 days of data. While viewing a patient’s interactive report, from the top of the page click Print Reports to print or Download Reports to save. Then, choose a date range and any or all of the reports.  

Yes. Dexcom Clarity has the option to export data as a CSV file viewable in Excel. Export from one patient by clicking the Patient Name, then click Export. Or, export for all patients in your Patient List by clicking Export All Data from the top of your Patient List page.

• Overview – presents up to four clinically relevant patterns, dashboard statistics, as well as the patient’s Best Day. This quick summary can help focus the discussion on problem areas contributing to hyper- and hypoglycaemia.  

• Patterns – dive deeper into each of the four clinically relevant patterns. Each pattern provides graphs of the days that contribute to that pattern.  

• Data – Trends and Overlay graphs show aggregate data with filtering options. Daily graphs offer a detailed view of every glucose data point for each day selected.  

• Compare – side-by-side comparison of Trends, Overlay and Daily graphs to encourage progress and highlight challenges patients may face.  

• Statistics – provides focused insight for both daily and hourly glucose metrics. Advanced metrics can be selected for deeper analytics.  

• AGP – standardized Ambulatory Glucose Profile (AGP) report provides a big picture view of diabetes management.

Once a patient has been added to the Patient list, click the Patient Name to invite them to share their data or choose to upload Receiver data. Once sharing has been initiated or the Receiver is uploaded, click the Patient’s Name, then click Go to access interactive reports.

For every release, a notification banner is posted at the top of the Dexcom Clarity page on the day of the release. Follow the banner’s link to read the release notes. If the Uploader software is updated, the notification banner posts 2 weeks before the release.

If you have questions about Dexcom Clarity, please contact your local Technical Support team via our Product Support Request form or call 0800 031 5763 (UK) or 1800 827 602 (Ireland). 

Dexcom Clarity follows industry security standards and password expirations are a best practice. You can change your clinic user password when prompted or at anytime from Settings at the top of the page.

For mobile users, Clarity displays glucose data from a Dexcom CGM system 3 hours after the data is captured. This means that the most recent data you view in Clarity is at least 3 hours old.

For Dexcom Receiver users, the data is as current as the last upload. 

It is possible to use both a smartphone and a receiver to provide CGM data. The smartphone system streams data to the Clarity server, where that data is made available for reports after three hours. The Dexcom receiver requires connection to a computer to upload the data periodically. If the patient uses a smart device part of the time and a receiver part of the time, then Clarity needs data from both to provide accurate statistics. 

If you have questions, please contact your local Technical Support team via our Product Support Request form or call 0800 031 5763 (UK) or 1800 827 602 (Ireland). 

Dexcom complies with all applicable laws, including GDPR as of 25 May, 2018. Details can be found in our Privacy Policy and in our published list of Frequently Asked Questions (FAQ). 

With real-time CGM your current glucose levels and trends are sent automatically to a compatible smart device^† up to every 5 minutes.

With a Flash glucose monitor, it’s only when you wave (scan) the device over the sensor that you get the current glucose reading. This is also known as intermittent scanning (is-CGM). Unlike real-time CGM, Flash glucose monitors do not transmit so it will not alert you to low or high glucose levels until you ‘flash’ the sensor.

From 1st December 2023, all patients initiated on CGM sensors must receive prior approval for reimbursement support. Diabetes specialist teams will have access to apply for reimbursement for all people living with diabetes in Ireland. They must apply through the Primary Care Reimbursement Service (PCRS) special drug request online reimbursement application system.  

Patient specific approval will be visible on the secure scheme checker for pharmacists under patient specific arrangements.

The HSE MMP team can be contacted on [email protected]

1 box of  Dexcom G6 sensors (3 sensors) can be dispensed per patient per month, as per PCRS guidance (HSE Primary Care Reimbursement Service).

37 sensors per annum per patient for Dexcom One+ as per PCRS guidance (HSE Primary Care Reimbursement Service).

37 sensors per annum per patient for Dexcom G7 as per PCRS guidance (HSE Primary Care Reimbursement Service).

All technical queries should be reported directly to the Dexcom Technical Support Team (1800 827 603). This team can troubleshoot with the patient and replace sensors where necessary. If the patient is having recurring issues, the Technical Support Team will alert our field team who will work with the patient and their hospital diabetes team on re-education.

If you have questions, please contact your local Technical Support team via our Product Support Request form or call 1800 827 603. 

Pharmacies cannot directly order a transmitter for a person with diabetes. This must be initiated by their diabetes healthcare team. If there are any queries regarding deliveries or supply of transmitters, the patient needs to call Dexcom sales (1800 827 602).

When HSE funding is approved, each patient is eligible for 4 transmitters a year. After that, the hospital diabetes team need to make another funding application to the HSE.

A how-to insert the sensor and transmitter training video can be here  

Dexcom G7 and Dexcom One+ are all-in-one systems and have the transmitter incorporated.

If your patient has any further queries please contact Dexcom directly 

There are three main steps for order processing once a patient is approved via online portal as follows. Please read below:

Dexcom One+

1. Patient goes to pharmacy to pick up prescription following PCRS approval. 
2. Pharmacist checks patients online secure tracker and ensures that patient has been approved
3. Pharmacist dispenses 3 x Dexcom One + for one month supply (limited to 37 per year)

Dexcom One+ Product Details:
GMS Code: 97636
SKU Code: STP – D7 - 001

Dexcom G7

1. Patient goes to pharmacy to pick up prescription following PCRS approval. 
2. Pharmacist checks patients online secure tracker and ensures that patient has been approved.
3. Pharmacist dispenses 3 x Dexcom G7 (limited to 37 per year)

Dexcom G7 Product Details:
GMS Code: 97631
SKU Code: STP GT 002

Dexcom G6

Dexcom G6 Product Details:
Dexcom G6 1 sensor box details:
GMS Code 97628
SKU Code: STS GS 002

Dexcom G6 3 sensor box details:
GMS Code: 97629
SKU Code: STS GS 003

Real-time continuous glucose monitoring (rt-CGM) systems provide real-time glucose values and enable setting of both hypoglycaemia and hyperglycaemia alerts. Results show that using Dexcom sensor devices instead of SMBG in T1D patients reduces HbA1c¹ which can potentially reduce the total costs of healthcare resources utilisation².   

Real-time continuous glucose monitoring (rt-CGM) can also be compared to flash glucose monitoring (FGM).  When using a baseline severe hypoglycaemic event rate of 4.2 per 100 patient years³ and calculating reductions in hospitalisations from the Rescue trial⁴ for rt-CGM and the Future trial⁵  for FGM, an extra reduction in severe hypoglycaemic hospitalisations of +1.6 per 100 patient years favouring Dexcom technology at a cost of 31.62 EUR per sensor was calculated. 

Additionally, when sourcing a baseline diabetic ketoacidosis hospitalisation rate of 1.8 per 100 patient years⁶ and calculating a reduction in hospitalisation from the Rescue trial⁴ for rt-CGM and the Future trial⁵ for FGM, an extra reduction in hospitalisations for diabetic ketoacidosis of +0.9 per 100 patient years favouring Dexcom technology at a cost of 31.62 EUR was calculated⁷. 

The use of Dexcom ONE+ is a potential cost saving strategy in the treatment of patients with T1D. 

Our findings can inform the Irish payer about the economic value of Dexcom ONE+ for patients with T1D.

References  

1. Beck et al. Effect of continuous glucose monitoring on glycemic control in adults with type 1 diabetes using insulin injections: The diamond randomized clinical trial. JAMA. 2017; 317:371-378.

2. Bansal et al. Impact of Reducing Glycated Hemoglobin on Healthcare Costs Among a Population with Uncontrolled Diabetes. Appl Health Econ Health Policy. 2018 Oct;16(5):675-684. 

3.  Liu, J., Wang, R., Ganz, M. L., Paprocki, Y., Schneider, D., & Weatherall, J. (2018). The burden of severe hypoglycemia in type 1 diabetes. Current medical research and opinion, 34(1), 171-177. 

4. Charleer et al. Sustained Impact of Real-time Continuous Glucose Monitoring in Adults With Type 1 Diabetes on Insulin Pump Therapy: Results After the 24-Month RESCUE Study. Diabetes Care. 2020 Dec;43(12):3016-3023. 

5. Charleer et al. Quality of Life and Glucose Control After 1 Year of Nationwide Reimbursement of Intermittently Scanned Continuous Glucose Monitoring in Adults Living With Type 1 Diabetes (FUTURE): A Prospective Observational Real-World Cohort Study. Diabetes Care. 2020 Feb;43(2):389-397. 

6. Thomas, M., Harjutsalo, V., Feodoroff, M., Forsblom, C., Gordin, D., & Groop, P. H. (2020). The Long-Term Incidence of Hospitalization for Ketoacidosis in Adults with Established T1D—A Prospective Cohort Study. The Journal of Clinical Endocrinology & Metabolism, 105(1), 231-241. 

7. Dexcom, Data on File 2024. 

For product troubleshooting or replacement inquiries, please complete Product Support Request.

You can also contact by Phone:

Monday- Friday 07:00-18:00
Saturday – Sunday 08:00-16.30
Telephone: 1800 827 603