Cell Viability Assay Kit (Fluorometric - Dual Green/Red) (ab112121)


  • Product name
    Cell Viability Assay Kit (Fluorometric - Dual Green/Red)
    See all Cell Viability kits
  • Sample type
    Adherent cells, Suspension cells
  • Assay type
  • Species reactivity
    Reacts with: Other species, Mammals
  • Product overview

    Abcam's Cell Viability assay kits are a set of tools for monitoring cell viability and cellular functions. ab112121 uses two non-fluorescent indicators: The CellGreen fluorescent dye for viable cells and a cell-impermeable DNA-binding dye for the cells with compromised membranes. The non-fluorescent Green Indicator Dye can easily permeate intact live cells and is hydrolyzed by intracellular esterase to generate the strongly fluorescent hydrophilic CellGreen fluorescent dye which is well-retained in the cell cytoplasm. The esterase activity is proportional to the number of viable cells. The DNA-binding dye is quite polar and impermeable for viable cells that have intact membranes. It becomes fluorescent only upon binding to the DNA of dead cells. Cells grown in black-wall plates can be stained and quantified in less than two hours.

    ab112121 is more robust and accurate than the other viability assays. It can be readily adapted for a wide variety of fluorescence platforms such as microplate assays, fluorescence microscope, and flow cytometry. The kit provides all the essential components with an optimized assay protocol. It is suitable for both proliferating and non-proliferating cells (either suspension or adherent cells). ab112121 comes with sufficient reagents to perform either 200 assays (96-well format) or 800 assays (a 384-well format).

    Visit our FAQs page for tips and troubleshooting.

  • Notes

    ab112121 should be stored desiccated.Assay kit comes with sufficient reagents to perform either 200 assays (96-well format) or 800 assays (a 384-well format).

  • Tested applications
    Suitable for: Flow Cytmore details



Our Abpromise guarantee covers the use of ab112121 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
Flow Cyt Use at an assay dependent concentration.


  • CHO-K1 cell number response was measured with ab112121. CHO-K1 cells at 0 to 5,000 cells/well/100 µL were seeded overnight in a black wall/clear bottom 96-well plate. The cells were incubated with 100 µL/well of Green dye-loading solution for 1 hour at 37 °C. The fluorescence intensity was measured at Ex/Em = 490/ 525 nm. The fluorescence intensity was linear (R2 = 1) to the cell number as indicated. The detection limit was 30 cells/well (n=6).



ab112121 has not yet been referenced specifically in any publications.

Customer reviews and Q&As

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Yes, it should work theoretically. For dead cells, the dye is same in ab112121 and Invitrogen L-7007. For live cells, the working principle is different. Ab112121 is for labeling only live cells, Invitrogen's f...

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Unfortunately, we do not have a kit which combines these two factors in one, or more precisely: we haven't tested them in combination. However, we do have an abundance of kits which can measure this two factors s...

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Les filtres à utiliser sont FITC (vert)et Cy3ou Texas red (rouge).

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To our knowledge, this kit has not yet been cited in any publications. While the specifics of the dyes used in this kit are considered proprietary, the product overview provides a general description about how the...

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MTT assay can be carried out on 96 well plates using either adherent or floating cells. You do not necessary need to remove (harvest) the cells by trypsinization. You can culture the ce...

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