Investigational product
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  Investigational product

Investigational product

   A pharmaceutical form of an active ingredient or placebo being tested or used as a reference in a clinical trial, including a product when used or assembled (formulated or packaged) in a way different from the approved form, or when used for an unapproved indication, or when used to gain further information about an approved use.


A placebo is an inactive pill, liquid, or powder that has no treatment value. In clinical trials, experimental treatments are often compared with placebos to assess the treatment's effectiveness. In some studies, the participants in the control group will receive a placebo instead of an active drug or treatment. No sick participant receives a placebo if there is a known beneficial treatment.

That which can be observed in patients. Research that uses patients to test new treatments, as opposed to laboratory testing or research in animals.


Inverell District Hospital
The Inverell District Hospital is a hospital in Inverell, New South Wales, Australia.

Inversine is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): mecamylamine hydrochloride.

Investigational new drug
A drug allowed by the U.S. Food and Drug Administration (FDA) to be used in clinical trials, but not approved for sale to the general public.

A person responsible for the conduct of the clinical trial at a trial site. If a trial is conducted by a team of individuals at a trial site, the Investigator is the responsible leader of the team and may be called the Principal Investigator.


Interim clinical trial/study report
A report of intermediate results and their evaluation based on analyses performed during the course of a trial, usually prepared for review by DMC.

Internal consistency
A property of data that does not contradict itself.

Interrater reliability
The property of yielding equivalent results when used by different raters on different occasions.

Intracerebral haemorrhage
Haemorrhage within the brain.

Intrarater reliability
The property of yielding equivalent results when used by the same rater on different occasions.

Investigational product

A person responsible for the conduct of the clinical trial at a trial site. If a trial is conducted by a team of individuals at a trial site, the Investigator is the responsible leader of the team and may be called the Principal Investigator.

Reduction of blood supply - to brain, heart or other cells.

Ischaemic stroke
A stroke caused by a cerebral infarct, classified by arterial distribution: total anterior circulation infarct (TACI), partial anterior circulation infarct (PACI), posterior circulation infarct (POCI) and lacunar infarct (LACI).

Imaging tests
Takes pictures of the lungs and can detect problems such as a mass, an infection, air in the pleural space. Visual imaging tests include; chest x-rays, CTs (computed tomography).

Immunohistochemical staining
A laboratory process of detecting an organism in tissues with antibodies. These antibodies are labeled with a compound that is seen as a colored deposit when viewed microscopically. In general, mesotheliomas require immunohistochemical confirmation before legal measures are initiated.

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