To obtain the best flow of blood from a dermal puncture,the blood collector should:

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Alternately applying and releasing pressure to the site helps stimulate blood flow and prevents excessive pooling or clotting in the puncture site. This technique is called milking or massaging the finger to encourage capillary flow. Tight squeezing or firm massaging can damage tissue or cause hemolysis, while frequent wiping with alcohol can dry and irritate the area, leading to poor blood flow.

To Obtain the Best Flow of Blood from a Dermal