The Seahorse XFe24 Analyzer measures OCR and ECAR of live cells in a 24-well plate format. These rates are key indicators of mitochondrial respiration and glycolysis and provide a systems-level view of cellular metabolic function in cultured cells, islets, and ex vivo samples. It analyze as few as 10,000 cells per well in the custom 24-well plate. Cell number requirements vary by cell type; consult the Cell Reference Database for details. The 24-well microplate and system has capacity for larger and/or more metabolically active samples than the 96-well system.