that generally stays at during normal daily activities (no bending
or folding). Choose a site that is at least 1 inch away from an insulin
injection site.
When is Sensor Glucose dierent from Blood Glucose:
• Physiological dierences between the interstitial uid and capillary
blood may result in dierences in glucose readings between the
System and results from a ngerstick test using a blood glucose meter.
Dierences in glucose readings between interstitial uid and capillary
blood may be observed during times of rapid change in blood glucose,
such as after eating, dosing insulin, or exercising.
What to know about interfering substances such as Vitamin C
and Aspirin:
• Taking ascorbic acid (vitamin C) while wearing the Sensor may falsely
raise Sensor glucose readings. Taking salicylic acid (used in some pain
relievers such as aspirin and some skin care products) may slightly
lower Sensor glucose readings. The level of inaccuracy depends on the
amount of the interfering substance active in the body.
• Test results did not indicate interference for methyldopa (used in some
drugs to treat high blood pressure) or tolbutamide (infrequently used
in some drugs to treat diabetes in the US) at maximum circulating
levels. However, concentrations of potential interferents in interstitial
uid are unknown compared to circulating blood.
7
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