CD-Chex CD34®

CD-Chex CD34 is a three-level process control for enumerating CD34 positive cells by flow cytometry. It requires no dilution and provides reference values similar to levels found in bone marrow, cord blood and mobilized patient samples.

CD-Chex CD34 is a ready-to-use, positive procedural control for enumerating CD34 positive cells by flow cytometry. Designed to resemble a patient sample, CD-Chex CD34 contains human leukocytes, erythrocytes and CD34 positive cells with characteristics similar to human hematopoietic progenitor cells. This control does not require any dilution and offers 30-day open-vial stability, which eliminates the need to track thermal openings, and 90-day closed-vial stability, reducing the number of shipments, associated costs and time spent performing lot-to-lot correlation…

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CD-Chex CD34 stem cell enumeration flow cytometry control


  • Only commercially available CD34 control with three levels
  • No dilution required
  • Whole blood control- resembles patient sample
  • Compatible with flow cytometers using the ISHAGE protocol and enumeration kits
  • 30-day open-vial stability; 90-day closed-vial stability


  • Helps clinical laboratories meet quality requirements for CD34+ stem cell quantitation
  • Long shelf life reduces the number of shipments, associated costs and lot-to-lot correlations
  • Manufacturer established assay ranges – no need to verify range per CAP requirements
  • Access to STATS®, our free interlaboratory quality control program for peer group data comparison
DescriptionCatalog Number
2 x 1.0 mL (Level 1)213337
2 x 1.0 mL (Level 2) 213347
2 x 1.0 mL (Level 3) 213383
2 x 1.0 mL (Levels 1 & 2) 213338
4 x 1.0 mL (Levels 1 & 2) 213339

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Quality Pillars for Building Measurement Assurance in Flow Cytometry

The webinar provides updates on the current best quality practices in flow cytometry and case studies for assay, reagent and instrument monitoring.

We offer a comprehensive line of positive procedural controls and cellular stabilization products for immunophenotyping by flow cytometry. Our CD-Chex® quality controls provide you with assay values for various leukocyte populations, intracellular and surface markers, and our cellular stabilization products allow you to preserve samples for extended periods of time, eliminating the need for cold-chain shipping or immediate processing.

Flow Cytometry Quality Control and Stabilization products

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