Clinical Trials, Phase I as Topic

**Definition:** Works about studies performed to evaluate the safety of diagnostic, therapeutic, or prophylactic drugs, devices, or techniques in healthy subjects and to determine the safe dosage range (if appropriate). These tests also are used to determine pharmacologic and pharmacokinetic properties (toxicity, metabolism, absorption, elimination, and preferred route of administration). They involve a small number of persons and usually last about 1 year. This concept includes phase I studies conducted both in the U.S. and in other countries.

**Tree numbers:** - E05.318.372.250.250.200 - N05.715.360.330.250.250.200 - N06.850.520.450.250.250.200

**Synonyms:** - Phase I Clinical Trial - Phase 1 Clinical Trial - Clinical Trials, Phase I - Clinical Trials, Phase 1 - Phase 1 Clinical Trials - Phase I Clinical Trials