Bloodletting

Bloodletting in past

•          Performed by a cut into a vein with a sharp instrument to drain blood

•          The lancet was the most popularly used instrument

•         Aseptic practices were not known, so the lancet was reused for several patients

Bloodletting now

•          Profession emerged as a result of technology and expansions in laboratory function

•          Performed by trained professionals

•          Standards of practice set by the Clinical and Laboratory Standards Institute (CLSI) 

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