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Cell Biology & Epigenetics

Products >  Cell_Biology_and_Epigenetics >  Apoptosis_Kits_and_Reagents >  Caspase_Profiling

Caspase 3 Colorimetric Assay Kits

The ApoAlert Caspase Assay Kits provide a simple and convenient way to detect caspase protease activity using fluorometric or colorimetric methods. We offer caspase detection assays in two formats: assay kits and 96-well plates. The assay kits detect caspase activation by assaying for the cleavage of a fluorescent or a colorimetric substrate. The entire protocol—from collection of cells to fluorometric or colorimetric results—takes only 90 minutes.

Caspase Colorimetric Assay Kits & Caspase Fluorescent Assay Kits

The Caspase-3 Colorimetric Assays measure the proteolytic cleavage of the chromophore p-nitroanilide (pNA) by caspase-3. Liberated pNA can be monitored colorimetrically by absorbance at 405 nm.

The Caspase-9/6 Fluorescent Assay detects the shift in fluorescence of 7- amino-4-methoxy coumarin (AMC). Upon cleavage, AMC fluorescence can be measured using a 380-nm excitation filter and a 460-nm emission filter. Fluorescence detection is highly sensitive and can be used to measure even very small amounts of active caspase.

The Caspase-3 Fluorescent Assays detect the shift in fluorescence emission of 7-amino-4-trifluoromethyl coumarin (AFC). After the substrate is cleaved by the protease, AFC emits a yellow-green fluorescence at 505 nm if excited at 400 nm.

Caspase Assay Plates

Oftentimes, depending upon the specific cell type as well as the apoptotic stimuli used, one or more caspases will become activated. The ApoAlert Caspase Profiling Assay Plate can be used to simultaneously analyze several different caspases in your sample, with up to 24 wells available for each caspase.

The ApoAlert Caspase Profiling Plate measures the activation of four different caspases (caspase-2, -3, -8, and -9) using a fluorometric method in a convenient 96-well format. Caspase profiling plates make it easy to profile caspase activities in a variety of cell lines after treatment with different apoptotic stimuli.

  At-A-Glance   Documents   Images & Data


These kits measure one of the earliest indicators of apoptosis—caspase proteolytic activity

  • Simultaneously profile multiple caspases
  • Perform the assay directly on cell lysates
  • Fast and easy: caspase colorimetric assays and fluorescent assays
  • Easily formatted for high-throughput applications
  • Works with as few as 1 x 106 adherent cells or cells in suspension
  • No substrate handling


  • Measure caspase activity in cells
  • Monitor apoptotic events at a cell population level

Additional Information

Please see the product's Certificate of Analysis for information about storage conditions, product components, and technical specifications. Please see the Kit Components List to determine kit components. Certificates of Analysis and Kit Components Lists are located under the Documents tab.

Cat. # Product Contents Size Price Units Select
630205 ApoAlert® Caspase-1 Inhibitor, YVAD-cmk (1 mM) 100 uL $105.00
630216 ApoAlert™ Caspase-3 Colorimetric Assay Kit 25 Assays $248.00
630217 ApoAlert™ Caspase-3 Colorimetric Assay Kit 100 Assays $655.00
630215 ApoAlert™ Caspase-3 Fluorescent Assay Kit 100 Assays $655.00
630212 ApoAlert™ Caspase-9/6 Fluorescent Assay Kit 100 Assays $655.00



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