| abstract |
The application relates to the field of recombinant proteins, a recombinant human chorionic gonadotropin freeze-dried powder injection and a preparation method thereof. A human chorionic gonadotropin freeze-dried powder injection is prepared by a freeze-drying process comprising human chorionic gonadotropin, at least one excipient and at least one pH regulator. The human chorionic gonadotropin freeze-dried powder injection of the present invention uses sucrose as a freeze-drying excipient, and is freeze-dried under an appropriate pH condition, and the obtained freeze-dried product has a plump appearance and a good supporting structure. |