Dexcom G7 User Manual page 141

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Table 3-C. Concurrence of G7 sensor readings and YSI values by YSI glucose
range (adults, n=308)
CGM
YSI value range (mg/dL)
sensor
reading
range
<40
40- 60 61- 80
(mg/dL)
16
<40
61.5%
4.7%
9
1,418
40- 60
34.6%
63.6%
1
61- 80
3.8%
29.4%
81- 120
---
2.2%
121- 160
---
0.1%
161- 200
---
201- 250
---
251- 300
---
301- 350
---
351- 400
---
>400
---
Total
26
2,231
134
81-
120
105
97
3
1.5%
0.0%
944
71
14.8%
1.0%
657
4,134
678
65.0%
9.4%
49
1,175
5,570
18.5%
77.5%
2
2
855
0.0%
11.9%
6
9
---
0.1%
0.1%
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
6,358
7,186
121-
161-
201-
160
200
250
3
---
---
0.1%
2
---
---
0.0%
11
4
---
0.2%
0.1%
671
30
7
12.6%
0.7%
0.2%
3,950
636
58
74.0%
15.2%
1.5%
691
2,916
668
12.9%
69.5%
16.8%
9
608
2,687
0.2%
14.5%
67.8%
4
538
---
0.1%
13.6%
7
---
---
0.2%
---
---
---
---
---
---
5,337
4,198
3,965
251-
301-
351-
300
350
400
---
---
---
---
---
---
---
---
---
---
---
---
5
---
---
0.1%
55
4
---
1.4%
0.1%
651
51
6
16.8%
1.1%
0.3%
2,604
1,187
77
67.3%
25.9%
4.4%
547
2,795
598
14.1%
61.0%
33.9%
9
530
940
0.2%
11.6%
53.3%
14
143
---
0.3%
8.1%
3,871
4,581
1,764
>400
---
---
---
---
---
---
3
1.7%
---
6
3.4%
48
27.0%
121
68.0%
178

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Do you have a question about the G7 and is the answer not in the manual?

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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