Dexcom G7 User Manual page 140

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Table 3-B. Concurrence of G7 sensor readings and YSI values by CGM glucose
range (pediatrics*; n=122)
CGM
YSI value range (mg/dL)
sensor
reading
range
<40 40- 60 61- 80
(mg/dL)
3
33
<40
4.1%
44.6%
186
40- 60
---
46.3%
61
61- 80
---
5.6%
2
81- 120
---
0.1%
121-
---
---
160
161-
---
---
200
201-
---
---
250
251-
---
---
300
301-
---
---
350
351-
---
---
400
>400
---
---
* Includes pediatric subjects 7-17 years of age; no YSI measurements were taken for
pediatric subjects 2-6 years of age.
E • Technical Information |
81-
121-
120
160
33
5
---
44.6%
6.8%
196
15
5
48.8%
3.7%
1.2%
895
120
11
82.2%
11.0%
1.0%
278
1,103
168
17.9%
70.9%
10.8%
156
908
---
12.0%
70.1%
1
173
---
0.1%
18.5%
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
Dexcom G7 User Guide
161-
201-
251-
200
250
300
---
---
---
---
---
---
2
---
---
0.2%
5
---
---
0.3%
215
16
---
16.6%
1.2%
605
148
10
64.6%
15.8%
1.1%
122
610
169
13.3%
66.7%
18.5%
87
344
---
12.2%
48.2%
86
---
---
10.9%
1
---
---
0.3%
---
---
---
301-
351-
>400
350
400
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
13
---
---
1.4%
279
3
---
39.1%
0.4%
589
110
1
74.9%
14.0%
0.1%
114
240
21
30.3%
63.8%
5.6%
3
43
32
3.8%
55.1%
41.0%
Total
74
402
1,089
1,556
1,295
937
914
713
786
376
78
133

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Questions and answers

John Granato
April 10, 2025

Dexcom G7 continues to show readings 50 or 60 points higher than when I stick my finger and use the supplied recorder. Why?

1 comments:
Mr. Anderson
April 10, 2025

The Dexcom G7 may show readings 50 or 60 points higher than fingerstick measurements due to several reasons:

1. Sensor's First Day: Newly inserted sensors may show larger differences, which usually decrease over the first 24 hours.
2. Pressure on Sensor: If something is pressing on the sensor (e.g., lying on it), it can affect readings. Removing the pressure can help.
3. Rapid Glucose Changes: Blood glucose changes before interstitial fluid glucose, so fast changes can cause differences between meter and sensor readings.
4. Fingerstick Issues: Inaccurate fingerstick readings can occur if hands are not washed properly or test strips are expired or used incorrectly.

These factors can cause temporary differences between Dexcom G7 and fingerstick readings.

This answer is automatically generated

Annie Freeze
May 5, 2025

How high does the Dexcom 7 reciever go?

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