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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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TR 67: Objectionable Microorganisms TR 54-4: QRM: Biotech Drug Substance
Risk
The combination of the probability of occurrence of harm and the severity of that harm.(TR30) (TR44) (TR54) (TR54-2) (TR54-4) (TR58) (TR67) (TR68) (TR88)

Source: TR 30: Parametric Release

Manufacturing GMP/Good Manufacturing Processes/cGMP Validation Quality Risk Management/QRM

Excipient
A component of a drug formulation that has no active pharmacologic function. Excipients are commonly used in drug formulations as modulators of pH or osmolality for parenteral administration and as stabilizers for APIs. (TR54-4) An ingredient added intentionally to the drug substance that should not have pharmacological properties in the quantity used. (TR57) Inactive pharmaceutical ingredients in a product formulation that are responsible for the product’s manufacturability and physicochemical attributes. (TR67) (TR88)

Source: TR 54-4: QRM: Biotech Drug Substance

Biotechnology Manufacturing GMP/Good Manufacturing Processes/cGMP Lyophilization Packaging Science Validation Quality Risk Management/QRM Technology Transfer Vaccines