User's Manual

48 | Continuous Glucose Monitoring System
4.2 HOW TO CALIBRATE
For Calibration, you must enter the exact fi ngerstick reading from your meter.
Readings must be between 40-400 mg/dL and must have been taken within the
past 5 minutes. Entering incorrect fi ngerstick readings, or fi ngerstick readings
that occurred more than 5 minutes ago, will affect device performance.
The steps below show you how to enter your fi ngerstick readings for calibration:
1. Take a fi ngerstick reading using your meter.
2. From any Trend Graph, press the
SELECT button to display the Main Menu.
3. Use the
TOP or BOTTOM TOGGLE button to scroll
until you highlight “Enter BG.”
4. Press the
SELECT button to choose this option.
You will see a screen with a blood drop and a
number in mg/dL units.
a. During initial calibration the Receiver will
default to the reading of 120 mg/dL as your
starting point.
b. If there has been a glucose reading in the past
15 minutes, the Enter BG screen will display
your current continuous glucose reading as your
starting point. Do not use the continuous glucose
reading for calibration. Use only fi ngerstick
readings from your meter.
4
NOTE: “Enter BG” will be the second Main Menu
option when you are not in the middle of a Sensor
session.