CytoScan™ WST-1 Cell Proliferation Assay

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SKU: 786-212-XX Category:
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CytoScan™ WST-1 Cell Proliferation Assay is a sensitive and accurate assay for cell proliferation and cytotoxicity. The assay is highly convenient as it is performed in a single cell tissue culture well and requires no washing, harvesting or solubilization of cells.  


Adherent or suspension cells are cultured in a microplate and then incubated with WST-1 and the assay is monitored with a spectrophotometer. The assay principle is based upon the reduction of the tetrazolium salt WST-1 to formazan by cellular dehydrogenases. The generation of the dark yellow colored formazan is measured at 420-480nm (optimal at 440nm) and is directly correlated to cell number.


The kit components are sufficient for performing up to 500 or 2000 assays.



  • Uses WST-1, a high sensitivity tetrazolium salt.
  • Colorimetric assay.
  • Adherent or suspension cells.
  • No washing, harvesting or solubilization required.



  • For the detection of cell toxicity, death, viability or proliferation.
  • Ideal for high throughput screening.



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