Answer
It is produced using recombinant DNA technology. The product information states that no additives of human or animal origin are used in its cell culture, purification, conjugation or formulation.
Sources for this answer
- Refixia 500 IU powder and solvent for solution for injection — Current selected SmPCemc · Summary of Product Characteristics
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.