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There are a few reasons your blood sugar meter may give you a result that is not accurate (is not correct). Before you go to the lab to check if your meter is accurate, or buy a new meter, be sure:
You should get your blood sugar meter checked once a year at the lab. You can get it checked at the same time that you’re doing any other blood work. Make sure to take your meter to the lab with you.
After the lab technician takes blood from your arm, check your blood sugar with your meter as you usually do. Write down your meter result, and make a note that it was with your lab test. Later, compare the blood sugar result from your meter with the blood sugar result from the lab.
To be accurate, your meter readings should be less than 15% different from the lab.
Example: Your healthcare provider tells you that your lab sugar result was 7.8 mmol/L. And in your log you recorded that your meter sugar result was 8.2 mmol/L at the same time. Based on the above formula:
Your meter gives you blood sugar readings that are only 5.1% different from the lab. This means that your meter is accurate, because it has to be less than 15% different from the lab.
To see this information online and learn more, visit MyHealth.Alberta.ca/health/pages/conditions.aspx?Hwid=custom.ab_diabetes_bloodsugarmeteraccuracy_inst.
For 24/7 nurse advice and general health information call Health Link at 811.
Current as of: October 21, 2020
Author: Primary Care and Chronic Disease Management, Alberta Health Services
Care instructions may be adapted by your healthcare provider. If you have questions about a medical condition or this instruction, talk with your doctor or appropriate healthcare provider.