How to Read a White Blood Cell Histogram

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)

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Objectives

  • Describe the purpose, axes, and major cell regions of a 3-part white blood cell (WBC) histogram.
  • Apply a systematic method to evaluate population distribution, peak separation, shoulders, extra peaks, and edge events.
  • Recognize common histogram patterns associated with WBC predominance, abnormal cell populations, and analytical interference.
  • Correlate WBC histogram findings with the total WBC count, absolute differential counts, analyzer flags, scattergrams, and peripheral blood smear findings.

Course Outline

  • How to Read a White Blood Cell Histogram
    • What is a White Blood Cell Histogram?
    • Use a Systematic Reading Method
    • Step 1: Locate the Expected Cell Regions
    • Step 2: Assess the Shape and Separation
    • Step 3: Examine the Edges and Possible Interference
    • Step 4: Correlate Before Interpreting
    • Table: Common Histogram Patterns
    • Case Study
    • Key Takeaways
  • References
    • 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.