Accu-Chek SmartGuide Sensor

Does the Accu-Chek SmartGuide sensor require calibration?

Yes, the Accu-Chek SmartGuide sensor has an initial calibration routine, consisting of 2 steps.

Accu-Chek SmartGuide Sensor

How does the calibration work?

The calibration routine consists of two steps:

After a warm-up time of 1 hour, the sensor is in Trend Mode, and sends CGM values to the app every 5 minutes. Don't use these initial CGM values to make therapy decisions, such as insulin dosing. 12 hours after insertion of the sensor, the app prompts you to calibrate.

Step 1: Perform a blood glucose test and enter the glucose value into the app. The sensor goes into Therapy Mode. CGM values can now be used to make therapy decisions, such as insulin dosing.

Step 2: 30 minutes to 3 hours later, perform another blood glucose test and enter the glucose value into the app. This is to confirm the first measurement. Note: If step 2 is missed, the sensor returns to Trend Mode.

The calibration routine is completed for the sensor.

To calibrate your sensor:
1. Test your blood glucose with your blood glucose meter, according to the manufacturer's instructions.
2. Tap Calibrate Now on your Home screen.
3. Enter the glucose value from your blood glucose meter in the Calibrate screen. The glucose value should be entered no later than 3 minutes after performing the test.
4. Tap Save.
5. Check that you entered the same glucose value into the app that was displayed on your blood glucose meter and tap Confirm. The glucose measurements of the sensor are more accurate if you calibrate at a point in time when your blood glucose level is relatively stable. Do not calibrate shortly after a meal, after insulin administration, or after physical activity, and avoid environments with very hot or very cold temperatures, or rapidly changing temperatures. If you accidentally entered an incorrect value, tap Cancel and enter the correct value. Your sensor is calibrated.

Accu-Chek SmartGuide Sensor

Why is calibration required for the Accu-Chek SmartGuide sensor?

The sensor requires calibration to provide you with the most accurate readings possible:
An uncalibrated sensor will be in Trend Mode. You can see CGM values but should not use them for therapy decisions.
A calibrated sensor will be in Therapy Mode. You can use the confirmed values to make decisions (such as insulin dosing).
The sensor mode appears under the CGM value on the Home screen.

Accu-Chek SmartGuide Sensor

What does "Trend Mode" / "Therapy Mode" mean in the Accu-Chek SmartGuide app?

There are 2 modes of CGM values: Trend Mode and Therapy Mode.

The mode the sensor is currently in is indicated directly below the CGM value on the Home screen.

When the sensor is in Trend Mode the following applies:

CGM values should not be used to make therapy decisions, such as insulin dosing.
CGM values can be used only to see trends and as a general reference.
To make therapy decisions, such as insulin dosing, test your blood glucose with your blood glucose meter.
When the sensor in is Therapy Mode the following applies:
• CGM values can be used to make therapy decisions, such as insulin dosing.

Accu-Chek SmartGuide Sensor

How accurate is the Accu-Chek SmartGuide CGM sensor?

The overall MARD (Mean Absolute Relative Deviation) of the Accu-Chek SmartGuide sensor is 9.2 %. 
For more information see the chapter ""Technical Data"" in the User's Manual.

Accu-Chek SmartGuide CGM Solution

What must I consider when I swim or mountain climb while using the Accu-Chek SmartGuide CGM solution?

If you want to go swimming you can keep the sensor on your body. The Accu-Chek SmartGuide sensor may be submerged for up to 60 minutes at a depth of up to 1m. However, the adhesive can come off more easily in water, so using additional waterproof tape is recommended.

If you plan to spend time at high altitude, keep in mind that the Accu-Chek SmartGuide sensor is only guaranteed to work up to an altitude of 9,842 feet (3000 meters). Also clarify the allowable altitude for the blood glucose meter you are taking with you.

Keep in mind that physical activity has an effect on glucose levels, so it’s a good idea to regularly check your current level in the app when in doubt (e.g., when leaving the smartphone at the poolside when swimming). Also refer to FINAL Tips for Using your CGM Solution For Water Sports and Activities mmol/l