Method for maintaining activity of chorionic gonadotrophin

The invention discloses a method for maintaining the activity of a raw chorionic gonadotrophin material in a finished chorionic gonadotrophin for injection. The purpose of maintaining the activity of chorionic gonadotrophin in the body is achieved by adjusting a pH environment on which the raw chorionic gonadotrophin material is dependent during batching. The method has the advantages of easiness, high product purity and yield, low cost and the like and is suitable for large-scale industrial production in the medicine industry. 本发明公开了种保持绒促性素原料在注射用绒促性素成品药中活性的方法，通过调节绒促性素原料在配料过程中所依附的pH环境，以达到保持绒促性素在人体内的活性的目的。本发明方法具有简便、产品纯度和收率高、成本低等优点，适合医药行业大规模工业生产。