How to use Press Blood lancets? Press blood Lancet Step 1 Pull out the protective cap and discard. Step 2 Place the lancet fimly against the puncture site to activate. Do not remove the device until an audible click is heard. Step 3 Dispose of the used lancet in a suitable sharps container. Press 2 blood lancet Step 1 Twist cap until it separates easily from lancet body. Do not pull. Step 2 Step 2 Place the lancet fimly against the puncture site to activate. Do not remove the device until an audible click is heard. Step 3 Dispose of the used lancet in a suitable sharps container.