User's Manual

Dexcom G5x System User Guide
Calibration
119
1. Wash and dry your hands before staking a fingerstick measurement.
2. Always use the same meter you routinely use to measure your BG.
a. BG meter and strip accuracy vary between meter brands.
b. Switching within a session might cause sensor glucose
readings to be less accurate.
3. Follow meter’s instructions exactly when taking your fingerstick
measurement.
4. Verify test strips are current and, if required, coded correctly with
meter.
5. Check: Is Bluetooth on?
a. If off, can’t calibrate
6. Use fingerstick BG values only.
a. Other sites are not as accurate.
b. Must enter within five minutes of taking BG meter value.
c. Enter exact BG value from your meter for each calibration.
Don’t:
7. Don’t take acetaminophen-containing medication during your session
(for example, Tylenol).
a. See your healthcare professional to better understand how
long acetaminophen is active in your body.
8. Don’t calibrate if your BG values are under 40 mg/dL or over 400
mg/dL.
a. If BG value is outside of this range, receiver doesn’t
understand these values and won’t calibrate.
i. You must wait until your BG is in the range to
calibrate.
9. Don’t calibrate if trend arrows are going straight up or down
a. Glucose is changing too quickly for an accurate calibration.
Be safe—if BG is low, first treat low blood sugar, and then calibrate.
7.7 Ready? Set? Calibrate!
You’ve followed the nine steps above, have a valid BG value from your meter,
and your display device keeps alerting you: Calibrate! Calibrate! Calibrate!
Remember:
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