The E11 error on a Contour Plus blood glucose meter indicates that there was a problem completely filling the test strip with a blood sample. Essentially, the meter did not receive enough blood to perform an accurate glucose measurement.
Understanding the E11 Error Message
When your Contour Plus meter displays an E11 error, it means the test strip was unable to draw in the required amount of blood for a successful reading. This error acts as a safeguard, preventing the display of an inaccurate result that could arise from an insufficient sample. The meter requires a precise volume of blood to ensure reliable glucose level measurement. If the blood drop is too small, or if there's an issue with the application technique, the E11 code will appear.
Common Reasons for an E11 Error
Several factors can lead to an E11 error during blood glucose testing:
- Insufficient Blood Sample: The most frequent cause is simply not applying a large enough drop of blood to the test strip.
- Incorrect Application Technique:
- Touching the strip too early: Applying the test strip to your finger before a full, rounded drop of blood has completely formed can lead to an incomplete fill.
- Inadequate contact: Not holding the test strip firmly enough against the blood drop, or removing it too quickly before the meter registers a full sample.
- Smearing the blood: Instead of allowing the strip to "sip" the blood, smearing it can prevent proper wicking.
- Diluted Blood Sample: Excessive squeezing or "milking" the finger can sometimes dilute the blood sample with interstitial fluid, making it harder for the strip to draw a clean and sufficient volume.
Troubleshooting and Resolving the E11 Error
The solution for an E11 error is straightforward and crucial for obtaining an accurate reading.
Immediate Action:
- Discard the Current Strip: The test strip that triggered the E11 error cannot be reused. It is compromised and must be safely discarded immediately.
- Retest with a New Test Strip: Always use a brand new, unused Contour Plus test strip for your next test attempt.
Steps for a Successful Retest:
- Prepare Your Finger and Blood Sample:
- Wash your hands thoroughly with warm water and soap, then dry them completely. This can also help improve blood flow.
- Use a fresh lancet in your lancing device.
- Prick a different spot on your fingertip (or an approved alternative site). Aim for the side of the fingertip, avoiding the very center.
- Gently massage your finger from the base towards the tip to encourage a large, rounded drop of blood to form. Ensure the drop is sufficient before proceeding.
- Apply Blood Correctly:
- Insert the new test strip into the meter.
- Bring the tip of the test strip gently to the side of the blood drop.
- Allow the strip to automatically sip the blood. Do not push the strip into the blood or apply it from the top.
- Hold the strip to the blood drop until the meter begins its countdown or indicates it has successfully wicked the sample.
Summary Table: Contour Plus E11 Error
| Error Code | Meaning | Recommended Action |
|---|---|---|
| E11 | Test strip not completely filled. | Discard the current test strip immediately. Retest using a new test strip, ensuring a sufficient blood sample and proper application technique. |
Importance of Accurate Monitoring
Promptly addressing and resolving errors like E11 is fundamental for effective diabetes management. An accurate blood glucose reading provides critical information for making informed daily decisions regarding medication, diet, and physical activity. If you consistently encounter E11 errors despite diligently following these troubleshooting steps, it is advisable to contact Ascensia Diabetes Care customer service for further assistance, as there might be an underlying issue with your meter or test strips.
