Qualitative Concept
investigational Audio
[ in-ves-ti-gey-shuhn ]
Definitions related to investigational:
  • In clinical trials, refers to a drug (including a new drug, dose, combination, or route of administration) or procedure that has undergone basic laboratory testing and received approval from the U.S. Food and Drug Administration (FDA) to be tested in human subjects. A drug or procedure may be approved by the FDA for use in one disease or condition, but be considered investigational in other diseases or conditions.
    NCI Dictionary of Cancer Terms
    U.S. National Cancer Institute, 2021
  • In the process of being studied; experimental.
    NCI Thesaurus
    U.S. National Cancer Institute, 2021
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