Like any medical device proper practice and care needs to be taken when handling the CareSens test strips. Washing and drying your hands before testing is recommended to avoid contamination on the electrode end of the strips.

Should your strip become contaminated, wet, or damaged, your CareSens meter will show an ‘Er1’ message on the screen, which means the meter, is identifying the strip as used.

It is also important to replace the lid of the vial after removing your test strips. If the vial is left open, the strips may become susceptible to humidity and blood glucose readings will be affected.

Additionally, if there is poor contact between the electronic sensors on the strip and the meter contacts, the error message will show.