CD-Chex CD34 by Streck Inc.

Manufacturer Streck Inc.  |  Available Worldwide
  |  1 reviews
CD-Chex CD34 is the only commercially available three-level process control for enumerating CD34 positive cells by flow cytometry. It is an assayed, whole blood control that requires no dilution and provides reference values similar to levels found in bone marrow, cord blood and mobilized patient samples.

CD-Chex CD34 by Streck Inc. product image
CD-Chex CD34
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Average Rating: 5.0
1 Scientist has reviewed this product

5 out of 5
Ease of use
5 out of 5
After sales service
5 out of 5
Value for money

  • Status:

  • Member since: 2021

  • Organization: Drexel College of Medicine/Hahnemann Hospital

  • Ease of use
    5 out of 5
    After sales service
    5 out of 5
    Value for money
    5 out of 5
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Great control for clinical stem cell evaluation.
Rating: 5.0

  • Application Area: Clinical stem cell quantitation/analysis

"A great control for stem cell evaluation/quantitation. Have been using this product clinically for over 10+ years and results always fall within the desired range. Sales rep is great and checks in regularly. They do standing orders to ensure you get your product when you need it."

Review date: 03 Feb 2021 | CD-Chex CD34

CD-Chex CD34 is a ready-to-use, positive procedural control for enumerating CD34 positive cells by flow cytometry. Designed to mimic a patient sample, CD-Chex CD34 contains human leukocytes and erythrocytes in a preservative medium with CD34 positive cells having characteristics similar to human hematopoietic progenitor cells. The whole blood control does not need to be diluted and offers 30-day open-vial stability, eliminating the need to track thermal openings. Its long shelf life reduces the number of shipments, associated costs and time spent performing lot-to-lot correlation.

CD-Chex CD34 is compatible with flow cytometry systems using ISHAGE gating strategies for enumeration of CD34 cells and these commercially available enumeration kits: BD Biosciences ProCOUNT Progenitor Cell Enumeration Kit, BD Stem Cell Enumeration Kit and Beckman Coulter Stem-Kit. It is the only stem cell control for CD34+ positive cells that offers three levels.


  • Only commercially available CD34 control with three levels
  • Ready to use control; no dilution required
  • Whole blood control mimics patient sample
  • Compatible with flow cytometers using 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 and associated costs
  • Established assay ranges provide less room for error
  • Tests a wider range of CD34 enumeration not offered by alternative controls
  • Fewer lot-to-lot correlations save time and resources
  • Access to STATS®, a free interlaboratory quality control program with peer group data comparison and online submission