Manual calibration instructions for a glucose meter include finding the coding number on the test strip vial, inserting the test strip into the meter and entering the correct coding number. For meters with automatic calibration, inserting the test disc into the meter automatically calibrates it, says Diabetic Care Blog.
For glucose meters that need manual calibration, the coding number, usually printed in bold on the outside of the test strip vial is first identified. The glucose meter is then switched on and the test strip inserted. The correct code number is inserted using the buttons on the meter, To ensure that the meter recognizes the code number, the test strip is removed and a new one is inserted, explains Diabetic Care Blog.
If the meter can be automatically calibrated, inserting the test disc into the meter after it is switched on is sufficient. Once the meter is closed, the device is automatically calibrated, reports Diabetic Care Blog.
To check if the glucose meter takes readings accurately, test with a blood sample. Also, compare meter readings with those taken by the glucose meters of health care providers. Additionally, ensure that the code on the vial and the meter match and that the test meter and strips are not outdated, advises My Blood Glucose Meter.com.