Clinical Trial, Phase IV (also known as Clinical Trial, Phase 4): Work that is a report of a planned post-marketing study of diagnostic, therapeutic, or prophylactic drugs, devices, or techniques that have been approved for general sale after clinical trials, phases I, II, and III. These studies, conducted in the Unite

NIH MeSH · D017429Publication Characteristics

Clinical Trial, Phase IV

Also known asClinical Trial, Phase 4

Definition

Work that is a report of a planned post-marketing study of diagnostic, therapeutic, or prophylactic drugs, devices, or techniques that have been approved for general sale after clinical trials, phases I, II, and III. These studies, conducted in the United States or a foreign country, often garner additional data about the safety and efficacy of a product.

MeSH classification

  • V03.175.250.400

Need clinical context, treatments, or patient-language explanation?

Ask GoDavaii AI about Clinical Trial, Phase IV

Related concepts

Adaptive Clinical Trial

Clinical study in which a prospectively planned opportunity is included to modify trial designs and hypotheses based on analysis of data fro…

Clinical Trial

A work that reports on the results of a clinical study in which participants are assigned to receive one or more interventions so that resea…

Clinical Trial, Phase I

Work that is the report of a pre-planned, usually controlled, clinical study of the safety and efficacy of diagnostic, therapeutic, or proph…

Clinical Trial, Phase II

Work that is a report of a pre-planned, usually controlled, clinical study of the safety and efficacy of diagnostic, therapeutic, or prophyl…

Clinical Trial, Phase III

Work that is a report of a pre-planned, usually controlled, clinical study of the safety and efficacy of diagnostic, therapeutic, or prophyl…

Controlled Clinical Trial

A work that reports on a clinical trial involving one or more test treatments, at least one control treatment, specified outcome measures fo…

Equivalence Trial

Trial that aims to show a new treatment is no better and no worse than the standard treatment.

Human Challenge Trials

Trials in which participants are intentionally challenged (whether or not they have been vaccinated) with exposure to an infectious disease …

Common questions about Clinical Trial, Phase IV

What does Clinical Trial, Phase IV mean in medicine?
Work that is a report of a planned post-marketing study of diagnostic, therapeutic, or prophylactic drugs, devices, or techniques that have been approved for general sale after clinical trials, phases I, II, and III. These studies, conducted in the United States or a foreign country, often garner additional data about the safety and efficacy of a product. This definition is taken from the National Library of Medicine's MeSH (Medical Subject Headings) 2026 release, which is the standard vocabulary used to index PubMed and most medical literature.
Is Clinical Trial, Phase IV known by any other names?
Yes. Clinical Trial, Phase IV is also referred to as Clinical Trial, Phase 4 in different clinical, research and patient-facing contexts. The MeSH descriptor groups all of these synonyms under a single canonical concept so research and records stay consistent.
Where does Clinical Trial, Phase IV sit in the medical classification?
Clinical Trial, Phase IV falls under the broader medical category "Publication Characteristics" in the MeSH hierarchy (tree numbers: V03.175.250.400). Browsing the related concepts on this page takes you to neighbouring topics in the same branch of medicine.
Where can I get a plain-language explanation of Clinical Trial, Phase IV?
For a plain-language explanation of Clinical Trial, Phase IV - including symptoms, treatments and what it means for an Indian patient - ask GoDavaii's Health AI. It works in 22+ Indian languages, is free and needs no signup. Tap "Ask GoDavaii AI about Clinical Trial, Phase IV" above.

Source: NIH MeSH 2026 (D017429) — National Library of Medicine, public domain. View official MeSH record ↗