Flow Cytometry Controls
Comprehensive line of positive procedural controls
and cellular stabilization products for immunophenotyping by flow cytometry.
The range of Streck CD-Chex® Flow Cytometry controls provides positive procedural controls manufactured from normal human peripheral blood leukocytes and erythrocytes.
CD-Chex® Plus controls for immunophenotyping by flow cytometry closely resemble patient samples with the inclusion of both red and white cells stabilised in a way which preserves the antigen sites. CD-Chex® also offers a complete process control when
evaluating CD-34.
The unique quality controls provide assay values for both normal and abnormal leukocyte populations and reference values for both intracellular and surface markers.
Flow Cytometry
Flow cytometry is a technique used to analyse cell size, complexity, phenotype and function in clinical and research laboratories. Reliable quality controls are essential to ensure accurate, reproducible and compliant results.
Flow cytometry controls help laboratories:
Verify instrument performance
Standardise assay set-up
Ensure reproducible results
Meet regulatory and accreditation requirements
Detect analytical issues early
Streck CD-Chex Quality Controls
The Trusted Standard for Flow Cytometry QC
Streck offers a comprehensive line of positive procedural controls supports immunophenotyping, lymphocyte subset analysis and stem cell enumeration by flow cytometry. Designed to closely mimic patient samples, CD-Chex controls provide laboratories with confidence in daily testing and long-term assay performance.
Extended Stability
Up to 30-day open-vial and 90-day closed-vial stability helps reduce waste and simplify QC scheduling.Independent Quality Assurance
Assayed third-party controls provide unbiased monitoring of assay and instrument performance to support ISO 15189 compliance.Ready-to-Use Whole Blood Controls
No reconstitution required. Whole blood matrices closely mimic patient samples for realistic QC monitoring.Confidence in Every Result
Established assay ranges, lot-to-lot consistency and long-term trending support reliable decision-making. Access the STATS® peer comparison programme.Broad Clinical Coverage
Supports TBNK subsets, CD4/CD8 monitoring, HIV testing, immunophenotyping, CD34+ enumeration and rare marker verification.Compatibility
Compatible with BD Biosciences and Beckman Coulter flow cytometry systems.
Quantitative Quality Control
Lymphocyte Enumeration, Immune Monitoring & CD34+ Stem Cell Counting
CD-Chex Plus®
Multi-parameter procedural control for immunophenotyping.
Assayed for 30 parameters, including T, B and NK cells, granulocytes and CD34+ cells
Available in two clinically relevant CD4+ levels
CD-Chex CD34®
Three-level process control for CD34+ cell enumeration.
Reference values representative of bone marrow, cord blood and mobilised samples
Compatible with ISHAGE gating strategies and commercial CD34 enumeration kits
Qualitative Quality Control
Daily Immunophenotyping & Rare Marker Verification
CD-Chex™ Daily
A stabilised whole blood control assaying 51 RUO markers for routine daily immuno-phenotyping in a single vial.
CD-Chex CD103 Plus®*
The only commercially available control assayed for CD103, CD30, CD38, CD56, CD138 and cytoplasmic Lambda.
CD-Chex CD117 Plus®*
A positive procedural control for CD117, CD25 and CD71, designed to resemble an abnormal patient sample.
CD-Chex TdT Plus®*
The only flow cytometry control assayed for TdT, CD1a, CD34 and cytoplasmic CD3.
*Research Use Only
