Cytotoxicity assay
Cytotoxicity assay
A cytotoxicity assay is an essential tool in biomedical research and drug development, used to evaluate the toxic effects of substances on cultured cells. These assays help determine whether a compound causes cellular damage or inhibits cell growth, which is crucial when screening potential pharmaceuticals, chemicals, or environmental agents. One widely adopted method is the XTT Cell Viability Assay, a colorimetric test that measures the metabolic activity of live cells. This assay relies on the principle that only viable cells with active mitochondrial enzymes can reduce the yellow tetrazolium salt (XTT) to an orange, water-soluble formazan dye. The intensity of the resulting color, quantified by absorbance at 450 nm, directly correlates with the number of living cells.
TribioScience’s XTT Cell Viability Assay Kit offers a simple, safe, and high-throughput solution for cytotoxicity testing. The kit eliminates the need for radioactive materials and involves no wash or cell transfer steps, reducing the potential for handling errors. Its straightforward protocol involves culturing cells in a 96-well plate, adding the XTT working solution, incubating for 2–4 hours, and then measuring absorbance. The ease of use and accuracy make it ideal for assessing the effects of various agents—such as anticancer drugs, cytokines, and growth factors—on cell proliferation and survival.
Designed for pharmaceutical research, this assay is particularly valuable in identifying cytotoxic compounds and optimizing therapeutic dosages. The kit includes ready-to-use XTT Reagent and Activator with a 12-month shelf life when stored at -20°C. Because the assay’s absorbance measurement is proportional to the number of viable cells, researchers can obtain precise quantitative data for cell viability, proliferation, and apoptosis. Whether testing drug efficacy or analyzing environmental toxins, TribioScience’s XTT Cell Viability Assay offers a reliable and efficient approach to cytotoxicity assessment.
