User`s guide

54 | Dexcom G4 Continuous Glucose Monitoring System

1. When you see this calibration prompt it means

it is time to calibrate with a single blood glucose

value. You can clear the prompt by pushing the

SELECT button. The system will re-alert you every

15 minutes until the receiver accepts the blood

glucose value.

2. Take 1 blood glucose measurement with your meter

and enter the blood glucose value into the receiver.

If this screen reappears shortly after you have entered a new blood glucose

value see Chapter 9, Section 9.2, Calibration Troubleshooting.

Calibration prompt

4.5 OTHER REASONS YOU MAY NEED TO CALIBRATE

• When your system did not accept the last calibration.

• When your blood glucose value is very different from the sensor glucose

reading.

1. When you see this calibration prompt it means it is

time to calibrate with a single blood glucose value.

2. Take 1 blood glucose measurement with your meter

and enter the blood glucose into the receiver. If this

screen reappears shortly after you have entered a

new blood glucose value see Chapter 9, Section

9.2.1, Types of Calibration Prompts.

HELPFUL H INT:

If you see these screens they are indicating calibration errors (see Chapter

9, Section 9.3, Calibration Error Troubleshooting).

15 minute calibration

error screen

1 hour calibration

error screen

Calibration prompt