XTT Cell Proliferation Assay Kit


The XTT Cell Proliferation Assay (XTT-CPA) is a sensitive kit for the measurement of cell proliferation based upon the reduction of the tetrazolium salt, 2,3-Bis(2-methoxy-4-nitro-5-sulfophenyl)-2H-tetrazolium-5-carboxanilide.

Available Size(s): 2500 Wells Catalog Number: 4891-025-K Category:


The XTT Cell Proliferation Assay (XTT-CPA) is a sensitive kit for the measurement of cell proliferation. Cleavage of the tetrazolium salt to formazan occurs via the succinate-tetrazolium reductase system in the mitochondria of metabolically active cells.


  • Allows measurement of cell proliferation, cell viability or cytotoxicity.
  • Rapid determination in microplates (no solubilization step as in an MTT assay).
  • Reproducible and sensitive results.
  • No radioactivity.
  • Ideal for high throughput assays (no washing or other steps that can cause cell loss and variability).



Material Safety Data Sheet(s)

msds_4891-025-01 XTT Reagent

msds_4891-025-02 XTT Activator

Catalog # 4891-025-K includes :
Catalog Number Description Qty
4891-025-01 XTT Reagent 1
4891-025-02 XTT Activator 1


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