Cytiva's highest quality FBS, HyClone™ US origin Defined FBS is proprietary serial 40nm filtered, virus-tested to meet Title 9 CFR (Code of Federal Regulations), with an extensive biochemical profile. Fetal bovine serum (FBS) is a nutrient-rich cell culture supplement that is high in growth factors and low in antibodies, compared to non-fetal sera. HyClone™ Defined FBS is widely used by cell culturists who have a concern for viral contaminants and require an extensive biochemical profile. The final serum is assayed for over 50 components, including proteins, hormones, growth factors, metabolites, and nutrients important for cell culture. Assay results are included in the certificate of analysis and the biochemical assay list.

• Well-defined: assay results for over 50 components
• US origin: sourced and processed in the United States with complete traceability to origin
• Ultra-low endotoxin: ≤5 EU/mL endotoxin for reduced research and production risk
• Sterile-filtered: proprietary serial 40nm filter process
• Virus-tested: broad virus panel testing in accordance with 9 CFR 113.53