WST-8 Cell Proliferation Assay Kit
Item № 10010199
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96 wells $50.00 $0.00
480 wells $98.00 $0.00

Pricing updated 2015-12-02. Prices are subject to change without notice.

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  • WST-8 is reduced to purple formazan by extracellular NADH from living cells
  • A colorimetric, non-radioactive assay for assessing cell viability and proliferation
  • Detects 2,000-500,000 cells per well
  • Rapid assay; get results in 2-4 hours

Cayman's WST-8 Cell Proliferation Assay provides a tool for studying induction and inhibition of cell proliferation in any in vitro model. The assay is based on the extracellular reduction of WST-8 by NADH produced in the mitochondria resulting in a water-soluble formazan which dissolves directly into the culture medium. Cayman's WST-8 assay is preferred when higher cell densities are expected, as up to 5 x 106 cells/ml can be successfully quantified.

Needed but not supplied: Please download the kit booklet to verify if UltraPure Water (Milli-Q or equivalent) or any other components are needed for this assay.

Download Kit Booklet Download Safety Data Sheet (SDS)

Technical Information

WARNING - This product is not for human or veterinary use.

Shipping & Storage
Storage -20°C
Shipping Wet ice in continental US; may vary elsewhere
Stability 1 year
Product Downloads & Resources
Product Downloads

Download Kit Booklet 160 Kb PDF

Download Safety Data Sheet (SDS) 43 Kb PDF

Download free InChI Key generation software

Additional Information

View the Cayman Structure Database for chemical structure definitions for many Cayman products

Get Batch-Specific Data and Documents by Batch Number

Separate multiple batch numbers with commas

QC Sheets
Certificates of Analysis
References & Background Reading
Background Reading

Francoeur, A., and Assalian, A. Microcat: A novel cell proliferation and cytotoxicity assay based on WST-1. Biochemica 3 19-25 (1996).

Berridge, M.V., Tan, A.S., and Herst, P.M. Tetrazolium dyes as tools in cell biology: New insights into their cellular reduction. Biotechnol Annu Rev 11 127-152 (2005).

Technical Support

All 480 well kits are supplied with a single 500 dtn vial of antiserum and tracer, or Fab' conjugate that must be used within the stated time following reconstitution.

Contact Us
  • To streamline the process attach the appropriate questionnaire to your inquiry.

  • Toll Free Phone (USA and Canada Only): (888) 526-5351
  • Direct Phone: (734) 975-3888
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We offer you the deep and diverse knowledge of more than 100 in-house scientists and the expertise that comes from more than three decades of designing and developing the tools to advance biomedical research.

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You may be eligible to receive a free sample of WST-8 Cell Proliferation Assay Kit under the Cayman Challenge program.

Cayman Chemical

1180 East Ellsworth Road

Ann Arbor, Michigan 48108 USA


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