The FluoReporter™ Blue Fluorometric dsDNA Quantitation Kit provides the protocols and reagents for analyzing cellular NA with the blue-fluorescent Hoechst 33258 nucleic acid stain. With this kit, quantitation of cellular DNA is rapid, and all manipulations can be carried out in microplate wells. The cells are lysed by freezing them in distilled water, the diluted dye solution is then added to the lysed cells, and fluorescence is measured.