Active Care Medical TD-4121 Owner's Manual page 26

 Rub the puncture site for about 20 seconds before penetration.
 Clean the puncture site using cotton moistened with 70% alcohol and let it air
dry.
 Fingertip testing
Press the lancing device's tip firmly against the lower
side of your fingertip. Press the release button to prick
your finger, then a click indicates that the puncture is
complete.
 Blood from sites other than the fingertip
Replace the lancing device cap with the clear cap for AST. Pull the cocking control
back until it clicks. When lancing the palm, the forearm, and the upper-arm, you
must avoid lancing the areas with obvious veins because of excessive bleeding.
NOTE:
 Choose a different spot each time you test. Repeated punctures at the same
spot may cause soreness and calluses.
 Please consult your health care professional before you begin AST.
 It is recommended that you discard the first drop of blood as it might contain
tissue fluid, which may affect the test result.
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