Tandem t:slim X2 User Manual page 247

• Do not use alternative blood
glucose site testing (blood from
your palm or forearm, etc.) for
calibration as alternative site
readings may be different than
those from a blood glucose value.
Use a blood glucose value only
from your fingers for calibration.
• Use only blood glucose values
between 40–400 mg/dL for
calibration. If one or more of your
values is outside of this range, the
receiver will not calibrate.
• Use the same meter you routinely
use to measure your blood glucose
to calibrate. Do not switch your
meter in the middle of a sensor
session. Blood glucose meter and
strip accuracy vary between blood
glucose meter brands.
• Before taking a blood glucose
measurement for calibration, wash
your hands, make sure your
glucose test strips have been
stored properly and are not expired
and make sure that your meter is
properly coded (if required).
Carefully apply the blood sample to
Customer Technical Support: (877) 801-6901
the test strip following the
instructions provided with your
meter or test strips.
• Make sure you are using your blood
glucose meter following the
manufacturer's instructions to get
accurate blood glucose values for
calibration.
Chapter 26 – CGM Troubleshooting
245