ISPE Glossary of Pharmaceutical and Biotechnology Terminology

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(USP) Includes the label and the documents included with, but not attached to, the packaging materials that are in direct contact with the excipient, drug substance, or preparation (e.g. package insert).


The process of replacing a stable atom in a compound with a radioactive isotope of the same element to enable it to be detected by autoradiography or other techniques. Increasingly, radioactive labelling is being replaced by fluorescent labeling. The method is used to trace the path of the labeled compound through a biological or chemical system.

Publication Source: Food and Agricultural Organization of the United Nations (FAO)
Publication Date: 1999

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