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Proficiency Testing/EQA / 2026 Surveys / Immunology and Flow Cytometry /
Flow Cytometry

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FLOW CYTOMETRY, CD34+ - FL4
FL4
Analytes/procedures in bold type are regulated for proficiency testing by the Centers for Medicare & Medicaid Services (CMS).

Analyte Challenges per Shipment Number of Shipments
CD34+ 2 Two shipments per year

Program Information

  • Two 1.5‑mL stabilized human CD34+ specimens

Shipping Schedule

  • Shipment A: April 7
  • Shipment B: October 12




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