Blood glucose monitoring
Monitoring, recording and understanding your blood glucose levels (BGLs), often referred to as blood sugar levels, is important for both you and your health care team.
Why is it important to monitor your BGLs?
- Performing finger prick checks gives you an immediate BGL. This can guide you to know when to seek medical assistance and/or advice from your health care team.
- Recording your BGLs to share with your health care team provides important information about your diabetes self-management.
- To know whether your diabetes management plan is right for you.
- To understand the relationship between your BGLs and medications, food, physical activity and other lifestyle factors such as travel, stress and illness.
- It tells you how you are going with your diabetes self-management which can help increase your confidence.
How do you monitor your BGLs?
Glucose levels can be monitored using a blood glucose meter, Flash Glucose Monitor (FGM) or Continuous Glucose Monitor (CGM). Your diabetes team can advise when and how often to monitor.
Blood glucose meters
A blood glucose meter uses a small drop of blood to provide you with an immediate BGL. You will also need a finger pricking device with lancets (needles) and blood glucose monitoring strips.
There are a wide variety of blood glucose meters available, however, not all blood glucose monitoring strips are subsidised by the National Diabetes Services Scheme (NDSS). Ask your doctor or credentialled diabetes educator to help you choose a meter that suits your needs and show you how to use it. For accurate results the correct technique is also needed.
See the range of blood glucose meters and other products available from the Diabetes Shop at a discount for members of Diabetes Queensland.
Flash Glucose Monitors (FGM)
A FGM is a sensor worn behind the arm for 2 weeks. The sensor reads the level of glucose in between the cells just underneath the skin and needs to be scanned with a reader or smart phone application (app) to display the result. The sensor reads glucose levels every 5 minutes and retains 8 hours of readings which can be downloaded to give you and your diabetes team more insight into your blood glucose management. It is important to know that FGMs do not measure blood glucose levels so you will still need to do finger prick checks in certain circumstances. This is because FGM readings lag behind blood glucose readings by 5-10 minutes.
Continuous Glucose Monitors (CGM)
A CGM is a device which reads the level of glucose in between the cells just underneath the skin continuously. The device consists of a sensor and a transmitter. The sensor is replaced every 1-2 weeks and reattached to the reusable transmitter device. The continuous glucose reading can be sent to a receiver, smart phone app or insulin pump. CGMs can be set to produce audible alarms when glucose levels are outside of the healthy range, for example overnight. It is important to know that CGMs do require calibration with twice daily blood glucose meter readings because CGM readings lag behind blood glucose readings by 5-10 minutes.
How can you record your BGLs?
Keeping a record of your blood glucose readings is only helpful if you are going to use your results to manage your diabetes. Share your readings with your diabetes health care team and ask them how to interpret your readings to make decisions about your diabetes management.
- A paper diary. Write your BGLs down. Some blood glucose meter manufactures make a diary or your health care team may also have one for you to use.
- Phone apps. Some meters can Bluetooth your BGLs directly to your smart phone via an app. The app stores this information for you and can also be sent directly to your health care team.
- Your blood glucose meter. Some health care providers are able to download the information from your meter. You would need to give your meter to your team for downloading.
Subsidised blood glucose monitoring products
The National Diabetes Services Scheme (NDSS) is an initiative of the Australian Government. Once you are registered with the NDSS, you can access subsidised blood glucose monitoring products.
Registration with the NDSS is free and open to everyone in Australia with a Medicare card, diagnosed with diabetes. NDSS registration forms must be filled out by you and a member of your health care team – GP, Endocrinologist, Obstetrician, Paediatrician, Nurse Practitioner or Credentialled Diabetes Educator.
A selection of blood glucose monitoring strips are subsidised by the NDSS. All NDSS registrants can access subsidised blood glucose monitoring strips. If you are living with type 2 diabetes not using insulin, you will require a Blood Glucose Test Strip Six Month Approval form to access strips after an initial six-month period.
Some people with type 1 diabetes are eligible to access subsidised FGM and CGM The NDSS website provides information on the CGM initiative.
If you are already registered with the NDSS, you can search the NDSS Online Services Directory for a list of pharmacies or access points in your area that provide diabetes products at discounted rates.
For more information about blood glucose monitoring, talk to your Credentialled Diabetes Educator or call our Helpline on 1800 177 055.