Analytical quality
Endotoxins and Sterility: Different Questions
Endotoxins and sterility: Does the report distinguish viable microorganisms from endotoxins?
Source editorial review:
Before interpreting the result
Does the report distinguish viable microorganisms from endotoxins?
- Identify the method, sample and criterion for each determination.
- Do not substitute one test with a favorable result from the other.
- Keep the units and specific limits of the endotoxin result.
Endotoxins and sterility
Sterility testing and endotoxin measurement examine different aspects of a sample. Neither should substitute for the other or be inferred from chromatographic purity. Interpretation requires the method, tested sample and result expression. A general quality label provides none of those three elements.
A reading case: what to check
If a certificate reports only identity and HPLC, record that those tests do not document sterility or endotoxins. Where a determination exists, inspect units, limits and scope rather than converting a bounded result into an absolute guarantee. Research documentation also does not itself authorize human or veterinary use.
What to preserve in the record
A sterility result does not establish absence of endotoxins. Documentation must answer both questions through their respective methods without expanding the material's intended use.
Questions and answers
Does the report distinguish viable microorganisms from endotoxins?
Sterility testing and endotoxin measurement examine different aspects of a sample. Neither should substitute for the other or be inferred from chromatographic purity. Interpretation requires the method, tested sample and result expression. A general quality label provides none of those three elements.
What should the review record preserve?
A sterility result does not establish absence of endotoxins. Documentation must answer both questions through their respective methods without expanding the material's intended use.