Roche Accu-Check Nano Manual Del Usuario página 26

Troubleshooting Checks
6. Did you follow all of the testing instructions?
7. If you are still unsure of the problem ...
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Action
Read Chapter 2, Control Testing, and test again. If you
still have problems, contact the ACCU‑CHEK Customer
Care Service Center at 1‑800‑858‑8072.
Repeat the control test with a new test strip. If you
still have problems, contact the ACCU‑CHEK Customer
Care Service Center at 1‑800‑858‑8072.