Simple and Convenient Cell Viability Assay

Stanford University
Department of Pathology
Postdoctoral Researcher

Overall

Quality of Results

Ease-of-Optimization

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Questions/Comments

Company:

Biotium

Product Name:

XTT Cell Viability Assay Kit

Catalog Number:

30007

I study gene signaling pathways and routinely measure how genetic or chemical perturbations affect cell viability. This XTT assay provides a straightforward colorimetric readout that is easy to use in a 96-well format.

Experimental Design and Results Summary

Application

Cell viability and proliferation assays

Starting Material

Cultured mammalian cells

Tips

Perform an optimization step by reading the absorbance at various time points

Results Summary

The assay produces a water-soluble orange product, so there is no additional solubilization step as with MTT reagent. I measure the signal by absorbance at 465 nm and background absorbance at 630 nm using a standard plate reader.

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Summary

The Good

Simple workflow, no solubilization step, easy optimization

The Bad

Less sensitive than some fluorescent or luminescent viability assays

The Bottom Line

A convenient and easy-to-use viability assay for routine cell-based experiments

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