Order of Draw: Still Relevant & Why Errors Happen

Vastian Learning

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Continuing Education Credits

P.A.C.E.® Contact Hours: hour(s)

Florida Board of Clinical Laboratory Science CE Credit Hours

: hour(s)

(based on 73 customer ratings)

Objectives

  • Explain the purpose of the Clinical and Laboratory Standards Institute (CLSI) order of draw and why it minimizes additive carryover.
  • Identify common tube additives and describe how they may interfere with laboratory assays.
  • Apply updated CLSI guidance to prevent preanalytical errors during venipuncture and collection.
  • Evaluate case studies involving additive carryover and determine preventive actions.

Course Outline

  • References
    • Why the Order of Draw Still Matters
    • CLSI Guidance - Order of Draw
    • Tube Additives & Their Effects on Assays
    • Case Study 1 – Unexpected Hyperkalemia
    • Case Study 2 – Prolonged PT/INR
    • Case Study 3 – Severely Decreased Serum Calcium
    • Why Errors Happen
    • Key Takeaways – Order of Draw
    • References

Additional Information

This is a mini course designed to enhance learning and reinforce existing knowledge. It does not provide continuing education (CE) credit. The purpose of this course is to support ongoing professional development and review.