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Blood Collection

Heparin Infusions

February 15th, 2021


  • Significance

  • Taking blood from the same limb that a heparin infusion is running into will falsely elevate the APTT.
  • Prevention of Coag Contamination

  • Take the sample from a different limb
  • Turn off the infusion for 5-20 minutes prior to taking the sample
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