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The page below is a sample from the LabCE course Minimizing Pre-Analytical Variability During Venipuncture, Urine Sample Collection, and Sample Processing. Access the complete course and earn ASCLS P.A.C.E.-approved continuing education credits by subscribing online.

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Venipuncture Technique

After the patient is properly identified, prepared, and positioned, the blood collection process itself must be controlled to avoid introducing variability. The aspects to be reviewed include:
  • Site preparation
  • Needle gauge
  • Tourniquet
  • Tube mixing technique
  • Order of draw
  • Traumatic draw
  • Intravenous solutions