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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Activity
Ability of endotoxin (LPS) to initiate the LAL cascade in the compendial bacterial endotoxins test (BET) assay, or the ability to elicit a pyrogenic response in a compendial pyrogen test (2,10). Activity can be measured by other assays such as the monocyte activation test (MAT) or recombinant Factor C tests (rFc), if such tests have been validated, to demonstrate that decisions made from the results are comparable to or superior to the compendial assay. Activity is measured in endotoxin units (EU). In terms of activity, one EU = one IU, regardless of the source. Activity is generally expressed as a concentration, usually EU/mL.(TR82)