PDA Technical Glossary
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PDA Technical Glossary

PDA Technical Reports are highly valued membership benefits because they offer expert guidance and opinions on important scientific and regulatory topics and are used as essential references by industry and regulatory authorities around the world. These reports include terms which explain the material and enhance the reader’s understanding.

The database presented here includes the glossary terms from all current technical reports. The database is searchable by keyword, topic, or by technical report. Each definition provided includes a link to the source technical report within the  PDA Technical Report Portal.

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Biotechnology D GMP/Good Manufacturing Processes/cGMP
Decision Maker(s)
Person(s) with the competence and authority to make appropriate and timely quality risk management decisions.(TR54) (TR54-2)
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Decommissioning
A planned and orderly removal of a facility, operation or system from use. (TR48) The process of retiring equipment/systems/facili­ties from production use. (TR54-5)
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Decontamination
A process that is designed to remove soil (including microorganisms) and may consist of cleaning and/or disinfection. (TR51)
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Defect
(1) A departure of a quality characteristic from its intended level or state that occurs with a severity sufficient to cause an associated product or service not to satisfy its intended normal or foreseeable usage requirements. (TR51) (2) The nonfulfillment of intended usage requirements. The departure or absence of one or more quality characteristics from intended usage requirements. (TR43)
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Defect (ISO def.)
The nonfulfillment of intended usage requirements. The departure or absence of one or more quality characteristics from intended usage requirements. (TR76)
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Depyrogenation
The destruction and/or removal of bacterial endotoxins. A depyrogenation process should demonstrate at least 99.9% or a 3-log endotoxin reduction. (TR3) Removal or destruction of pyrogens. (TR70)
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Drug Development
A general term used to define the entire process of bringing a new drug to the Market. It includes drug discovery, process and product development, pre-clinical research (microorganisms/cell culture/animals) and Clinical trials (on humans). (TR56)
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Drug Product (DP)
A pharmaceutical product type that contains a drug substance, generally, in association with excipients. [Synonym: Dosage Form; Finished Product] (TR57)(TR14)(TR42) A finished dosage form (e.g., tablet, capsule, or solution) that contains a drug substance, generally, but not necessarily, in association with one or more other ingredients.(TR38) (TR67) (TR88) The dosage form in the final immediate packaging intended for marketing.(TR60)(TR82)
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Drug Substance (DS)
The active ingredient that is subsequently formulated with excipients to produce the drug product. It can be composed of the desired product, product-related substances, and product- and process-related impurities. It may also contain excipients, including buffers and other components. [Synonyms: bulk drug substance, bulk material, active pharmaceutical ingredient (API)] (TR14) (TR57) (TR74) (TR60) Active pharmaceutical ingredient in a drug product that is responsible for that product’s therapeutic activity.(TR67) (TR82) (TR88) See Active Pharmaceutical Ingredient (API). (TR56)
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