CD-Chex TdT™ Plus

CD-Chex TdT Plus

Positive Procedural Control for Immunophenotyping

CD-Chex TdT Plus is the only commercially available flow cytometry control assayed for TdT, CD1a, CD34 and cCD3 in a single control. The assay provides percent positive values for each assayed marker on abnormal leukocytes.

CD‑Chex TdT Plus can be used as quality control material for evaluating intracellular and surface antigens including CD1a, CD2, CD4, CD5, CD7, CD8, CD34, cytoplasmic CD3 and nuclear TdT (Terminal deoxynucleotidyl transferase). When stained with fluorescent antibodies and analyzed by flow cytometry, CD‑Chex TdT Plus provides reference values for abnormal cells often found in certain types of hematopoietic neoplasms.

CD‑Chex TdT Plus is designed for use on BD Biosciences and Beckman Coulter® flow cytometry systems. 

Streck offers STATS®, a free Interlaboratory Quality Control program for our customers.

For Research Use Only. Not for use in diagnostic procedures.


  • 90-day closed-vial stability
  • 30-day open-vial stability

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Manufacturer Instrument
Beckman Coulter Beckman Coulter Flow Cytometry Systems
BD Biosciences FACSCalibur™
BD Biosciences FACSCanto™
BD Biosciences FACSCanto™ II
BD Biosciences FACS™ Series
CD1a CD4 CD8
CD2 CD5 CD34 (Abnormal)
cCD3 CD7 TdT
CD-Chex TdT Plus Catalog Number
1 x 1.0 mL 213565
2 x 1.0 mL 213566