
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 55: TBA/TCA Detection Mitigation (4)
- TR 51: Biological Indicators (3)
- TR 63: Clinical Trials Material Preparation (3)
- TR 57: Analytical Method Validation (2)
- TR 70: Cleaning/Disinfection Programs (2)
- TR 54-5: Quality Risk Management for the Design, Qualification, and Operation of Manufacturing Systems (2)
- TR 45: Depth Filtration (2)
- TR 46: Good Distribution: Last Mile (1)
- TR 48: Moist Heat Sterilizer Systems (1)
- TR 49: Validation: Cleaning Biotech (1)
- TR 52: Supply Chain GDP (1)
- TR 54: QRM:Manufacturing Operations (1)
- TR 54-3: QRM: Drug Products (1)
- TR 54-4: QRM: Biotech Drug Substance (1)
- TR 56: Phase Appropriate cGMP Application (1)
- TR 57-2: Analytical Method Development (1)
- TR 58: Temp Controlled Distribution (1)
- TR 67: Objectionable Microorganisms (1)
- TR 68: Drug Shortage Management (1)
- TR 3: Validation: Dry Heat (1)
- TR 15: Validation: TFF in Biopharmaceuticals (1)
- TR 26: Sterilizing Filtration of Liquids (1)
- TR 83: Virus Contamination in Biomanufacturing: Risk Mitigation, Preparedness, and Response (1)
- TR 84: Integrating Data Integrity Requirements into Manufacturing & Packaging Operations (1)
- TR 29: Validation: Cleaning (1)
- TR 76: Identification and Classification of Visible Nonconformities in Elastomeric Components and Aluminum Seals for Parenteral Packaging (1)
- TR 39: Cold Chain (1)
- TR 43: Glass Defects (1)
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Bulk Packaged Product
Consists of solid, liquid, or frozen product in a bulk container configuration such as a bag, tank, or drum. The product may be in these container configurations between process steps or prior to filling into vials, ampoules, cartridges, or syringes. (TR39)
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Change Management
A systematic approach to proposing, evaluating, approving, implementing, and reviewing changes. (TR 51) (TR 54-5)
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Changeover
The steps taken for switching multiproduct equipment from the manufacture of one product to the manufacture of a different product. (TR29) (TR49)
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Class I Recall
A situation in which there is a reasonable probability that the use of or exposure to a violative product will cause serious adverse health consequences or death. (TR55)
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Class II Recall
A situation in which use of or exposure to a violative product or may cause temporary or medically reversible adverse health consequences or where the probability of serious adverse health consequence is remote.(TR55)
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Clean
Having product residues, process residues, and environmental contaminants removed to an acceptable level. (TR29) (TR49) The implementation of procedures to render an area, piece of equipment, system, or object free of adulterants and contaminants. (TR 70)
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Clean in Place (CIP)
The process of rinsing or washing of process components, as installed without removal, in order to remove or eliminate any contaminants. (TR45)
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Clean(liness)
The measurement for the level of particulates, microbes, or other extraneous substances on an item or surface. (TR 70)
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Clinician
A physician, psychiatrist, etc., who specializes in clinical work as opposed to one engaged in laboratory or experimental studies. (TR58)
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Commissioning
A well planned, documented and managed engineering approach to the start-up and transfer of facilities, systems and equipment to the end-user that results in a safe and functional environment that meets established design and user requirement specifications. Commissioning precedes Qualification and includes three phases:
1. Inspection, testing, and regulation
2. Adjustment and setting of work
3. Functional testing (TR 3)
A prescribed number of activities designed to take equipment and systems from a static, substantially complete state to an operable state. (TR 48)
A well planned, documented, managed engineering approach to the start-up and turnover of facilities, systems, and equipment to the end-user, that results in a safe and functional environment that meets established design requirements and stakeholder expectations.(TR 54) (TR 54-5)
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Comparability
The quality or state of being suitable for comparison. FDA may determine that two products are comparable if the results of the comparability testing demonstrate that a manufacturing change does not affect identity, strength, quality, purity, or potency as they may relate to the safety or effectiveness of the product. (TR38)
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Comparative Transfer
Transfer of a method that involves the analysis of a predetermined number of samples of the same lot by both the sending and the receiving unit. (TR 57-2)
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Compatibility
Proof that no adverse interaction between the filter and the process fluid has occurred. (TR26) A term used in relation to the non-reactivity of filter materials with the substance to be filtered. (TR45)
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Compendial Procedure
A method that is considered validated as published in one of the recognized compendia. (TR57)
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Complaint Files
(a) As defined by 21 CFR Part 211.198- Complaint Files. (b) A written record of each complaint shall be maintained in a file designated for drug product complaints. The file regarding such drug product complaints shall be maintained at the establishment where the drug product involved was manufactured, processed, or packed, or such file may be maintained at another facility if the written records in such files are readily available for inspection at that other facility. 1.The written record shall include the following information, where known: the name and strength of the drug product, lot number, name of complainant, nature of complaint, and reply to complainant .2.Where an investigation under 211.192 is conducted, the written record shall include the findings of the investigation and follow-up. The record or copy of the record of the investigation shall be maintained at the establishment where the investigation occurred in accordance with 211.180. (TR55)
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Concentration Factor
The ratio of the initial feed volume to the retentate volume. (TR15)
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Critical Process (CP)
A process that impacts a critical quality attribute of the intermediate, drug substance or drug product being manufactured and therefore should have established critical process parameters that can be monitored or controlled to ensure that the process produces the desired quality.
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Economically Motivated Adulteration
The fraudulent, intentional substitution or addition of a substance in a product for the purpose of increasing the apparent value of the product or reducing the cost of its production (i.e., for economic gain). (TR54-3)
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Extemporaneous Preparation (EP)
A type of compounding whereby a drug or combination of drugs and/or excipients is prepared under the supervision of a pharmacist to create a customized medication dosage form in accordance with a clinical protocol. (TR63)
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First Expiration, First Out (FeFo)
A method of controlling inventory to ensure that the material with the shortest remaining shelf-life is distributed first. (TR52)
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Good Distribution Practices (GDPs)
Defined as that part of quality assurance that ensures that the quality of the pharmaceutical product is maintained by means of adequate control of numerous activities which occur during the distribution process. (TR55)
(commonly abbreviated GDP, or as GDocP to distinguish from “Good Distribution Practice”) Describes standards by which documents are created and maintained. (TR56)
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Incoming Inspection
A preventative program where parts or products are subjected to evaluation upon receipt.(TR43)
A program where, upon receipt, parts or products are subjected to measuring, examining, testing, or gauging one or more characteristics of a product or service, and comparing the results with specified requirements in order to establish whether conformity is achieved for each characteristic.(TR 76)
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Manufacturing
The production, packing, testing, storage, release and distribution of drugs or medical devices for use in humans or animals where the manufacturing is indented to produce doses, typically in significant numbers, for an undefined population of future patients or clinical trial subjects. (TR63)
All operations including purchasing and receipt of materials to production, packaging, labelling, quality control, release, storage, distribution of components and the related controls. (TR 76)
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Master Seed Stock
Reference culture of a microorganism derived from an authenticated source such as American Type Culture Collection (ATCC) and used to produce working seed lots. (TR51)
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Method Comparability
The demonstration of analytical method comparability (AMC) for method replacements. A study to demonstrate that a modification to an existing method either improves or does not significantly change the analytical procedure’s characteristics relative to the methods’ validation and intended use. (TR57)
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Plant Utilities
Utilities include pharmaceutical-grade water systems, compressed gases, pharmaceutical-grade air systems, heating, ventilation and air conditioning systems, and space pressurization. (TR67)
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Raw Materials
Starting materials, reagents, and solvents used in the production of intermediates or APIs/drug substance. (TR54-4) (TR83)
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Risk-based Triage for Drug Shortages
A process of assessing and assigning priorities for managing drug shortage risks based on criticality and impact to patients (TR68)