First, we have to define accuracy
Our blood glucose meters are FDA 510(k) cleared. The FDA mandates that 95% of blood glucose meter readings must fall within 15% of the reference value, and 99% should be within 20%.
Several factors could influence the accuracy of the results obtained by a glucose meter, including:
- Improper hand washing or wet hands;
- Test strips deterioration due to improper storage or transportation;
- Expired test strips (to be used within 5 months after opening);
- The glucometer temperature at the time of measurement (outside 50° F - 104° F (10°C - 40°C);
- Ambient humidity outside the 10 - 80% RH range;
- Taking medicines or certain foods.
If none of the above could have led to the inaccurate measurement, it could also have been due to a defective test strip, which rarely happens. Please let us know if it happens again, and we will look into the warranty status of the strips and the device.
Outside articles that explain home glucose testing accuracy factors:
Blood glucose monitors: What factors affect accuracy? - Mayo Clinic
What can cause false high blood sugar readings? - MedicalNewsToday.com
7 Reasons You May Be Getting an Inaccurate Blood Sugar Reading - Teladoc Health