无血清培养基的使用能极大的减少过程的污染，但培养基中使用的生长因子或者蛋白污染仍然存在；When the intended product is used as a therapeutic agent in humans or animals the product should be highly purified to avoid potential health risks or other problems that might result from trace contaminants. Efforts to reduce trace media contamination to the lowest levels practical through optimal process design, validation, and final product testing require a sensitive and reliable analytical method. Cygnus offers highly sensitive ELISA kits for the detection of specific bioprocess contaminants. This kit is intended to quantitate bovine IgG contamination in various types of samples throughout the purification process. The colorimetric endpoint can be read within three hours on a conventional microtiter plate reader to a sensitivity of <250pg/mL of bovine IgG.