| NOUN | act | clinical trial, clinical test | a rigorously controlled test of a new drug or a new invasive medical device on human subjects |
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| Meaning | 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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| Synonym | clinical test | |
| Narrower | phase III clinical trial, phase III | A large / large / large clinical trial of a treatment or drug that in phase I and phase II has been shown to be efficacious with tolerable side effects |
| phase II clinical trial, phase II | A clinical trial on more persons than in phase I | |
| phase IV clinical trial, phase IV | sometimes the FDA approves a drug for general use but requires the manufacturer to continue to monitor its effects | |
| phase I clinical trial, phase I | A clinical trial on a few persons to determine the safety of a new drug or invasive medical device | |
| Broader | test, trial, run | The act of testing something |
| Catalan | assaig clínic | |
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