Continuous Glucose Monitor (CGM)

The standard way of measuring blood glucose involves taking a blood sample from your fingertip and using a meter to check your glucose levels. Now, advanced systems, called continuous glucose monitors (or CGM), offer more convenience and less pain. With a CGM, you place a tiny sensor under your skin. This sensor, which needs to be replaced every few days, measures glucose levels and sends the information to a wireless device that you wear. You can program the monitor; for example, it can take measurements every five minutes (around the clock) and sound an alarm if your levels become too high or too low.

Depending on the product, the information stored on the device can be downloaded to your computer. Special software allows you to track your levels and identify trends, providing important data to share with your doctor. Additionally, some devices allow you to press a button to record “events,” like when you give yourself an insulin shot, have a meal, or exercise. This information gets captured, as well, to create a picture of your diabetes management.

The downside of CGMs is that they may not be as accurate as the standard meters and finger prick samples. If you decide to switch to a CGM, your doctor may have you use both methods to test your glucose before changing your insulin dose.

Combined Systems: CGM and Insulin Pump

While insulin pumps have been around for several decades, newer products pair the pump with the CGM. This system is comprised of a sensor and glucose monitor, a pump (a small device that contains insulin), and tubing that is inserted under the skin to deliver insulin. The monitor transmits information wirelessly to the pump, which has a calculator to determine how much insulin you should receive. The dose is based on a number of factors, like the time and amount of your last insulin dose, your current blood glucose level, and the amount of carbs that you plan to eat. By combining technologies, these advanced products are designed to help you manage your diabetes by automatically fine-tuning the insulin dose, avoiding calculation errors, and adding convenience.

Home A1C Test

The A1C (also called the glycated hemoglobin or HbA1c) test shows the glucose levels in your body over the past 2-3 months. This test is important because it gives you and your doctor an overall view of how well you are managing diabetes and whether you need changes to your treatment plan.