Quality Control: Data from ScienCell™ LDH Cytotoxicity Assay of LDH solutions with concentrations ranging from 500 to 7.8 mU/ml shows a linear relationship between OD490nm and LDH concentration. ScienCell™ LDH Cytotoxicity Assay is also applied to Human Astrocytes (HAs) seeded at different densities with (positive control) and without (negative control) Triton X-100.