已有国家标准药品的申请，是指生产已经由国家药品监督管理局颁布的正式标准的药品注册申请。
Application for drugs with existing state standards shall refer to the application for registration of the drugs for which the SDA has promulgated official standards.
药物临床研究必须经国家药品监督管理局批准后实施，必须执行《药物临床试验质量管理规范》。
Clinical study of drugs must be approved by the SDA before it is carried out, and must follow the Criterions for the Quality Control of Clinical Trial of drugs.
遇有特殊情况的，经国家药品监督管理局批准，可以适当延长。
In case of special circumstances, the time period may be appropriately extended upon the approval by the SDA.
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