Which term corresponds to the FDA designation for drugs in human testing?

• A. New Drug Application (NDA)
• B. Phase 1 clinical trials
• C. Post-Marketing Surveillance
• D. Investigational New Drug (IND)

Answer: (D)

The concept being tested is the official FDA status that allows a drug to be studied in humans. The term that fits this is Investigational New Drug. An IND is submitted by the sponsor after preclinical testing and must be reviewed and allowed to proceed before any clinical trials in people begin. It includes data on the drug’s chemistry, manufacturing, and controls, results from animal studies, and the proposed clinical study plan, including safety monitoring. When the IND is active, researchers can start human testing in phases to evaluate safety, dosing, and early signals of efficacy.

In contrast, a New Drug Application is what a sponsor files after completion of clinical trials to seek permission to market the drug. Phase 1 clinical trials refer specifically to the first stage of human testing, focusing on safety and pharmacokinetics in a small group. Post-Marketing Surveillance is ongoing safety monitoring that occurs after a drug has been approved for use in the general population.