whats the smallest gauge needle used for CBC?

  1. Could you use a 25 gauge needle for a CBC draw? I would think it would be to small and damage some of the red blood cells, making the CBC inaccurate.
  2. 5 Comments

  3. by   Mags4711
    Sure you can use a 25g. It's used all the time in peds.
  4. by   suebird3
    I am used to using 20's or 21's......and butterflies in Ped's.

  5. by   Daytonite
    boy! are the phlebotomy gods with you today! i happened to run across a really nice website yesterday explaining how to do phlebotomy. i'm sure your question is answered in there because i remember seeing something in there about hemolysis which would be a concern when using a small gauge needle to draw blood. there is a slide show of photographs on how to draw blood and do a fingerstick (the lab version, not for doing a blood glucose) to link into at the site. here is the link. read on!
  6. by   VickyRN
    Thanks, Daytonite, for a truly awesome resource.

    We either use butterflies for our lab draws (21, 23, or 25 gauge) or vacutainer needles (21 or 22gauge).

  7. by   hotdog19d
    thank you!

whats the smallest gauge needle used for CBC?