Try a glucose repeatability study.

Change the last two glucose readings to see how they affect the CV, the decision against your limit and the report.

One control material, one run

20 readings in mg/dL, checked against a CV limit of ≤ 1.0%.

98991001011022468101214161820Result (mg/dL)Run order (included results)Row 1: result 99.2 mg/dLRow 2: result 100.4 mg/dLRow 3: result 101.1 mg/dLRow 4: result 98.7 mg/dLRow 5: result 100.8 mg/dLRow 6: result 99.6 mg/dLRow 7: result 101.5 mg/dLRow 8: result 100.1 mg/dLRow 9: result 98.9 mg/dLRow 10: result 100.6 mg/dLRow 11: result 101.2 mg/dLRow 12: result 99.4 mg/dLRow 13: result 100.3 mg/dLRow 14: result 101.8 mg/dLRow 15: result 98.6 mg/dLRow 16: result 100.7 mg/dLRow 17: result 99.8 mg/dLRow 18: result 101.0 mg/dLRow 19: result 100.2 mg/dLRow 20: result 99.5 mg/dL±2 SD at CV 1%Observed ±2 SDObserved ±2 SD±2 SD at CV 1%Mean±2 SD at CV 1%Observed ±2 SD
98991001011022468101214161820Result (mg/dL)Run order (included results)Row 1: result 99.2 mg/dLRow 2: result 100.4 mg/dLRow 3: result 101.1 mg/dLRow 4: result 98.7 mg/dLRow 5: result 100.8 mg/dLRow 6: result 99.6 mg/dLRow 7: result 101.5 mg/dLRow 8: result 100.1 mg/dLRow 9: result 98.9 mg/dLRow 10: result 100.6 mg/dLRow 11: result 101.2 mg/dLRow 12: result 99.4 mg/dLRow 13: result 100.3 mg/dLRow 14: result 101.8 mg/dLRow 15: result 98.6 mg/dLRow 16: result 100.7 mg/dLRow 17: result 99.8 mg/dLRow 18: result 101.0 mg/dLRow 19: result 100.2 mg/dLRow 20: result 99.5 mg/dLMean±2 SD at CV 1%Observed ±2 SD
The readings in run order around their mean, with the spread a 1.0% CV allows. Drag reading 19 or 20 to another of its values.
Choose two readings
See the other 18 readings
ReadingResult (mg/dL)
199.2
2100.4
3101.1
498.7
5100.8
699.6
7101.5
8100.1
998.9
10100.6
11101.2
1299.4
13100.3
14101.8
1598.6
16100.7
1799.8
18101.0

Calculated results

CV limit met

Mean
100.17 mg/dL
Repeatability SD
0.936 mg/dL
CV
0.93 %
95% CI for mean
99.73–100.61 mg/dL

Save this example

Page 1 of the report

It opens with the decision against the CV limit, the run-order plot and the study details. The 20 readings follow on page 2.

Open the report in a new tab

To see setup, data entry and an excluded reading, follow the study walkthrough, or read the repeatability study guide.