| 单词 | phase IV clinical trial |
| 释义 | phase IV clinical trial (extremely rare) n WORD FAMILY phase IV clinical trial n sometimes the FDA approves a drug for general use but requires the manufacturer to continue to monitor its effects; during this phase the drug may be tried on slightly different patient populations than those studied in earlier trials Syn|Hyper phase IV clinical test, clinical trial a rigorously controlled test of a new drug or a new invasive medical device on human subjects; in the United States it is conducted under the direction of the FDA before being made available for general clinical use |
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