Medical Assistant Prep / Unit 19 MAS 461 short lesson, about 20 seconds
Evacuated Tubes and Holders
Captions available
The idea
For several tubes, an evacuated tube system with a needle and holder lets each tube fill directly from the vein.
In practice
A vacuum in each tube draws a set amount of blood; a winged set or a syringe can be used when the evacuated system does not suit the vein.
Where people slip
With a syringe, fill tubes through a transfer device, never by hand.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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