PDA Technical Glossary

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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Conformance Batches/Lots
A pre-determined number of production lots, typically three, that represent the process and are evaluated to demonstrate consistency. [Synonyms: validation, consistency, demonstration lots, qualification lots] (TR14) (TR42)
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Development Reports
Documentation and description of work done during the early phases of development. The goal is to document information about the way the process works and to document why key choices were made in selecting the specifics of the process (e.g., flow rate or temperature). These documents can serve as a reference during investigations of discrepancies and during the design of specific Validation and characterization studies.(TR14) (TR 42) Documentation and description of work done during the early phases of development (Stage 1). The goal is to document information about the way the process works and to document why key choices were made in selecting the specifics of the process (e.g., flow rate or temperature). These documents can serve as a reference during investigations of deviations and during the design of specific validation and process characterization studies.(TR60)
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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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Impurity
Any component present in the drug substance or drug product that is not the desired product, a product-related substance, or excipient including buffer components. It may be either processor product-related. (TR14) (TR57) (TR74) Any component present in the drug substance or drug product which is not the desired product, a product-related substance, or excipient. It may be either process- or product-related (17). (TR60)
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Operational Qualification (OQ)
Documented verification that the equipment or systems, as installed or modified, perform as intended throughout the anticipated operating ranges. (TR14) (TR61) (TR64) (TR72) The documented verification that the facilities, systems and equipment, as installed or modified, perform as intended throughout the anticipated operating ranges. (TR54-5) Documented verification that the equipment or systems, as installed or modified, perform as intended throughout the anticipated operating ranges (17). (TR60-3)
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Parameters (Critical Operational Parameter)
An input process parameter that should be controlled within a meaningful, narrow operating range to ensure that API quality attributes meet their specifications. Although parameters with wide operating ranges may also impact product quality, they are generally easily controlled and not as likely to result in excursions that affect quality and are therefore low risk. [Synonym: critical process parameter (CPP)] (TR14)
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Parameters (Key Operational Parameter)
An input process parameter that should be carefully controlled within a narrow range and is essential for process performance. A key operational parameter does not affect critical product quality attributes. If the acceptable range is exceeded it may affect the process (e.g., yield, duration) but not product quality. (TR14)
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Parameters (Operational Parameter)
An input variable or condition of the manufacturing process that can be directly controlled in the process. Typically, these parameters are physical or chemical (e.g., temperature, process time, column flow rate, column wash volume, reagent concentration, or buffer pH). [Synonym: process parameter] (TR14)
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Parameters (Performance Parameter)
An output variable or outcome that cannot be directly controlled but is an indicator that the process performed as expected. [Synonym: performance attributes] (TR14)
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Performance Qualification (PQ)
Documented verification that the equipment and ancillary systems, as connected together, can perform effectively and reproducibly based on the approved process method and specifications. (TR3) (TR14) (TR45) (TR42) (TR48) (TR61) (TR64) Transport tests of product or representative product that is conducted during actual transportation or distribution. (TR39) Documented evidence that provides a high de­gree of assurance that the equipment and/or system functions accurately and consistently according to predetermined specifications in its operating environment. (TR54-5) Documented verification that the equipment and ancillary systems, as connected together, can perform effectively and reproducibly based on the approved process method and specifications (17). (TR60-3)
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Process Validation
The documented evidence that the process, operated within established parameters, can perform effectively and reproducibly to produce an intermediate or API (drug substance) meeting its predetermined specifications and quality attributes. (TR14) (TR42) Establishing documented evidence which provides a high degree of assurance that a specific process will consistently produce a product meeting its predetermined specifications and quality attributes. (TR44) The collection and evaluation of data, from the process design stage through commercial production, which establishes scientific evidence that a process is capable of consistently delivering quality products. (TR54) (TR57) (TR74) The collection and evaluation of data, from the pro­cess design stage through commercial production, which establishes scientific evidence that a process is capable of consistently delivering quality product. The documented evidence that the process, op­erated within established parameters, can per­form effectively and reproducibly to produce a medicinal product meeting its predetermined specifications and quality attributes, as described in EMA, EU GMP, Part 1, Annex 15, drug/me­dicinal product. (TR56) EMA: The documented evidence that the process, op­erated within established parameters, can per­form effectively and reproducibly to produce a medicinal product meeting its predetermined specifications and quality attributes. US FDA: The collection and evaluation of data, from the process design stage through commercial pro­duction, which establishes scientific evidence that a process is capable of consistently deliver­ing quality products. (TR60-2) The documented evidence that the process, operated within established parameters, can perform effectively and reproducibly to produce an intermediate or drug substance meeting its predetermined specifications and quality attributes (1, 17). (TR60-3)
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Process Validation Protocol
A written plan pre-approved by the quality unit that specifies critical steps, controls, and measurements. The process validation protocol states how validation will be conducted, identifying sampling, assays, specific acceptance criteria, production equipment, and operating ranges. Results obtained for each study described in the protocol should be evaluated in an associated process Validation report. (TR14) (TR42)
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Process Validation Report
A report approved by the quality unit that summarizes specific tests performed, compares the test results with the protocol acceptance criteria, and addresses deviations encountered during the study. (TR14) (TR42)
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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)
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Transition Analysis
Mathematical evaluation of the chromatogram tracing as the mobile phase changes from one solution to another. An alternative to HETP and peak asymmetry for evaluating column packing and performance. (TR14)
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