Common problems when using glucose meters

Problem	Result	Recommendation
Test strip not fully inserted into meter	Code error	Always make sure the test strip is fully inserted
Patient sample site (e.g. fingertip) contaminated with sugar	False high reading	Always clean and dry the sample site before testing
Insufficient blood applied to strip	Er4 error code displayed	Repeat the test with a new sample
Batteries low on power	Battery error	Change batteries and test again with a new sample
Test strips stored at temperature extremes	Fales high/low reading	Store kit and components according to the instructions
Test strip vial cracked	False high/low reading	Always inspect packages for cracks and handle with care.

Code Message	Problem	Troubleshooting
Er1	The inserted test strip has been used or damaged.	Use a new test strip.
Er2	The meter has malfunctioned.	Do a quality control test or replace the batteries and check if the meter works properly.
Er3	Signal transmission is disrupted.	Repeat the test using a new test strip.
Er4	The blood sample applied is too small.	Repeat the test using a new test strip.
Er5	An issue has occurred calibrating the meter.	Follow these steps: Remove the test strip from the meter. Turn off the meter (press and hold the main button for 3 seconds). Press the main button to turn on the meter again.
	Blood glucose level < 10mg/dL (0.6mmol/L)	Blood glucose level is low. Repeat the test to confirm and ingest some carbohydrates to treat hypoglycemia.
	Blood glucose level > 600mg/dL (33.3mmol/L)	Blood glucose level is high. Repeat the test and contact your healthcare professional./td>

Pay attention to the following when storing test strips:

Blood glucose test strips should be stored at room temperature between 4˚C to 30˚C and at normal humidity levels (below 70%).
Do not place test strips in the refrigerator.
Do not pack test strips separately into several small bags, as humidity will affect the accuracy of strips.
Test strips are effective for either 3-4 months after opening or until the expiration date if sealed and unopened.
After opening a test strip vial, make sure to tightly close the lid again to prevent the ingress of humidity.

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