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2023 EQA SCHEMES
EQA 2023 - Complete Blood Count (stabilized blood) (NUM)
Expert Biologists - Scheme Coordinators:
Estelle BUGNI and Laurent JALLADES
EQA performed since 2009
Number of participating laboratories in 2022: 537

1 – Scheme overview

The NUM EQA scheme is designed for the quantitative assessment of CBC analytes with peer-group between-laboratory comparisons and trend monitoring for automated instruments.

Two optional schemes are associated with this scheme :

  • EQA - NFR : CBC and reticulocytes in fresh blood
  • EQA - RETI : Reticulocytes (stabilized blood)

Participating labs can choose to be assessed for all the analytes of this scheme, or simply a subset of analytes of interest.

2 – Assessment frequency

Number of investigations per year: 4
Number of control samples per investigation: 2
Number of samples per year: 8

3 – List of items assessed 

  • Leukocytes
  • Red cells (Impedance, Optical)
  • Hemoglobin
  • Hematocrit
  • MCV
  • MCH
  • MCHC
  • RDW
  • Platelets (Impedance, Optical)
  • VPM

4 – Description of the control samples

Liquid human (Red cells) and animal (leukocytes and platelets) artificial, stabilized control blood samples (ready-to-use 2 mL samples).

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