Phase I Study to Evaluate rhTPO in Healthy Caucasian Volunteers

Single abdominal subcutaneous injection of the study drug will be given on D1. The administration and follow-up observation period will be 29 days (D1\~D29). Participants may be discharged at D7 at the judgment of the investigator. PK blood samples will be collected from D-1 to D14, tolerance and safety will be observed from D1 to D29, and blood samples for PD and anti-drug antibody (ADA) will be collected from screening to D29. After completion of relevant assessments on D29, participants will be considered as having completed this study.