Why isn’t the AST cap for the Accu-Chek FastClix lancing device completely transparent? | Accu-Chek
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Question
Why isn’t the AST cap for the Accu-Chek FastClix lancing device completely transparent?

To obtain a blood sample, the AST cap is pressed against the skin on the punctured site. The bottom of the cap is transparent to enable visibility of puncture site when pressing.