
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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- TR 57: Analytical Method Validation (2)
- TR 67: Objectionable Microorganisms (2)
- TR 14: Validation: Protein Purification Chromatography (2)
- TR 88: Microbial Data Deviation Investigations in the Pharmaceutical Industry (2)
- TR 56: Phase Appropriate cGMP Application (1)
- TR 60: Process Validation (1)
- TR 69: Bioburden/Biofilm Management (1)
- TR 74: Reprocessing of Biopharmaceuticals (1)
- TR 60-3: Process Validation: A Lifecycle Approach: Bio Drug Sub Mfg (1)
- TR 42: Validation: Protein Manufacturing (1)
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Assess the Effects of the Change
To evaluate the effects of a manufacturing change on the identity, strength, quality, purity, and potency of a drug product as those factors may relate to the safety or effectiveness of the drug product. (TR38)
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Biological Tests
Biological tests include animal, cell culture, or biochemical based testing that measures a biological, biochemical, or physiological response. (TR38)
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Comparability Protocol
A protocol submitted by an applicant under CFR 601.12(e) and 314.70 (g) that describes the specific tests and validation studies and acceptable limits to be achieved to demonstrate the lack of adverse effect for specified types of manufacturing changes on the identity, strength, quality, purity, and potency of the product as they may relate to the safety or effectiveness of the product. Any such protocols, or change to a protocol, shall be submitted as a supplement requiring approval from FDA prior to distribution of the product. The supplement, if approved, may justify a reduced reporting category for the particular change because the use of the protocol for that type of change reduces the potential risk of an adverse effect. (TR38)
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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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Facility
A physical building with a defined building number or name. (TR38)
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Formulation
A listing of the ingredients and composition of the dosage form. (TR38) The percent composition of ingredients in a product. (TR67)
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Historical Data
For purposes of this guidance, data on impurities or physical attributes from three or more consecutive, representative pre-modification batches. (TR38)
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Impurity Profile
A description of the identified and unidentified impurities present in a drug substance (ICH A3A). (TR38)
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Intermediate Material
The chemical mixture that may or may not have completed the chemistry steps, and thus is not in its final chemical and physical/conformational state, and has not been through final process steps to final drug substance. Examples in the small molecule world include isolated intermediates, intermediates, and final intermediates. Examples in the large molecule world include crude protein mixtures (pre-transformation, conversion, or folding) and purified protein prior to any final polishing steps. (TR38)
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Isolated Intermediate
An intermediate that is obtained as the product after workup of a purification step in the process scheme for the drug substance. The isolation or purification procedure should be part of the validated process. An aliquot of a product that is worked up and/or purified for purposes of characterization does not constitute an isolated intermediate. (TR38)
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Justification
Reports containing scientific data and expert professional judgment to substantiate decisions. (TR38)
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Process
A series of operations and/or actions used to produce a desired result. (TR38)
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Scale-Down
The process of decreasing the column volume. (TR38)
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Specification
A list of tests, references to analytical procedures, and appropriate acceptance criteria that are numerical limits, ranges, or other criteria for the test described. It establishes the set of criteria to which a material should conform to be considered acceptable for its intended use. (TR14)
A list of tests, references to analytical procedures, and appropriate acceptance criteria that are numerical limits, ranges, or other criteria for the test described. It establishes the set of criteria to which a material should conform to be considered acceptable for its intended use. Drug product and drug substance specifications are critical quality standards that are proposed and justified by the manufacturer and approved by regulatory authorities (TR38) (TR57)
A list of tests, references to analytical procedures, and appropriate acceptance criteria that are numerical limits, ranges, or other criteria for the test described. It establishes the set of criteria to which a material should conform to be considered acceptable for its intended use. Drug product and drug substance specifications are critical quality standards that are proposed and justified by the manufacturer and approved by regulatory authorities (TR69)
A list of tests, references to analytical procedures, and appropriate acceptance criteria, which are numerical limits, ranges, or other criteria for the tests described. It establishes the set of criteria to which a drug substance, drug product, or materials at other stages of its manufacture should conform to be considered acceptable for its intended use. “Conformance to specification” means that the drug substance and drug product, when tested according to the listed analytical procedures, will meet the acceptance criteria. Specifications are critical quality standards that are proposed and justified by the manufacturer and approved by regulatory authorities as conditions of approval. (TR56) (TR74)
A list of tests, references to analytical procedures, and appropriate acceptance criteria that are numerical limits, ranges, or other criteria for the test described. It establishes the set of criteria to which a material should conform to be considered acceptable for its intended use (17). (TR60-3)(TR88)