The serum’s origin has no influence on cell growth. Biosera has compared cell growth in FBS from seven different countries on three continents, and confirmed that regardless of the country of origin, all cell lines tested had the same average performance. One batch of FBS may work well for one specific cell line, but not for another. “Serum quality” is specific for each cell line. That is why testing of FBS is widely used when dealing with sensitive cell lines. Biosera performs the most extensive analysis of biochemical parameters and testing on cell lines in the industry, making available the results on the Certificates of Analysis.