spring-loaded lancet

spring-loaded lancet

Phlebotomy A mechanical device used to draw a capillary blood for microchemical analysis, which 'shoots' a sharp point/blade into the site from which the blood is drawn. See Sharps.
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Meter Basics Needle-free glucose meters are in development, but currently available devices incorporate a spring-loaded lancet (you also can purchase a separate lancing device if you prefer) that punctures the skin with minimal discomfort, to produce a small drop of blood.
In tests that call for a smaller sample, a spring-loaded lancet is used to puncture a patient's fingertip, and blood drops are then milked into a capillary tube and spun in a centrifuge.
Home glucose meters incorporate a spring-loaded lancet that punctures the skin (typically on the fingertip) with minimal discomfort, to produce a small drop of blood.