Lifescan OneTouch Ultra 2 Owner's Booklet page 23

Choose a different puncture site each time you test. Repeated
punctures in the same spot may cause soreness and calluses.
If bruising occurs at an alternate site or you have difficulty getting a
sample, consider sampling from a fingertip instead. You may want to
review the choice of sites with your healthcare professional.
Preparing your sample site
Before you test your blood glucose, wash your
hands and forearm (if applicable) thoroughly
with warm, soapy water. Rinse and dry.
Lancing and sampling from your fingertip
1. Remove the blue cap by twisting it off
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