clinical trial

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Noun1.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
trial, run, test - the act of testing something; "in the experimental trials the amount of carbon was measured separately"; "he called each flip of the coin a new trial"
phase I, phase I clinical trial - a clinical trial on a few persons to determine the safety of a new drug or invasive medical device; for drugs, dosage or toxicity limits should be obtained
phase II, phase II clinical trial - a clinical trial on more persons than in phase I; intended to evaluate the efficacy of a treatment for the condition it is intended to treat; possible side effects are monitored
phase III, phase III clinical trial - a 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; after successful conclusion of these clinical trials it will receive formal approval from the FDA
phase IV, phase IV clinical trial - 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
References in periodicals archive ?
There should have been a drug tester with him throughout the day.
Washington, Nov 3 (ANI): Serena Williams ran into her panic room in her Los Angeles mansion when she mistook a sports association drug tester for a dangerous intruder.
And the same guy whose coach manhandled a drug tester out of a training facility when he arrived unannounced.
One drug tester, who knocked on her home for an out-of-competition test, said he observed traces of white foam on the cyclist's face when she came to the door.
Despite being warned about missing two tests since October 2005, she was missing again on August 25 2006, when a drug tester visited her normal training venue at the Mile End Stadium.
The Welsh Rugby Union has not introduced it because it felt the prospect of a drug tester turning up on the doorstep, as operates in sports like athletics, swimming and cycling, ``was an invasion of privacy''.
We would then look for club officials," says one drug tester, who has to remain unidentified in order to continue his work.
But the programme claims an anonymous drug tester for UK Sport, who carry out over 1,000 tests a year on behalf of the FA, has suspicions that supposedly random appearances at training grounds are far from secret.
From Twitter Follow The Journal on Twitter @TheJournalNews Graeme Swann (@Swannyg66) Lost at Lords, drug tester staring at my manhood after the game, world's worst drivers all on the M1 together, no broken toe.
DELON ARMITAGE: The London Irish full-back got eight weeks out for abuse of a drug tester and now faces another ban.
Louis orthopedist who served as a drug tester for the U.
DELON ARMITAGE will miss England's entire Six Nations rugby campaign after being banned for abusing a drug tester.