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Related Concept Videos

Bioequivalence Data: Statistical Interpretation01:16

Bioequivalence Data: Statistical Interpretation

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Body:The statistical interpretation of bioequivalence data is a significant aspect of pharmaceutical research. Bioequivalence refers to the absence of any significant difference in the rate and extent to which the active ingredient in pharmaceutical products becomes available at the site of drug action when administered at the same molar dose under similar conditions. This helps determine if different drug products have similar absorption rates, ensuring their interchangeability.Statistical...
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Whole blood stability in quantitative bioanalysis.

Aaron R Ledvina1, Matthew Ewles2, Yongle Pang1

  • 1Covance Laboratories Inc., Bioanalytical, Madison, WI 53704, USA.

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Summary

Whole blood stability testing is crucial for regulated bioanalysis. Our study found whole blood and plasma stability profiles are highly correlated, offering insights for LC-MS plasma assays.

Keywords:
LC–MS/MSplasma-whole blood partitioningregulated bioanalysisstabilitywhole blood stability

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Area of Science:

  • Bioanalysis
  • Analytical Chemistry
  • Pharmacokinetics

Background:

  • Establishing sample stability is critical in regulated bioanalysis.
  • For plasma assays, stability between blood draw and centrifugation is key.
  • Regulatory expectations for whole blood stability testing in LC-MS plasma assays are evolving.

Purpose of the Study:

  • To discuss regulatory expectations for whole blood stability testing.
  • To present experimental approaches for assessing whole blood stability.
  • To evaluate the correlation between whole blood and plasma stability profiles.

Main Methods:

  • Reviewed regulatory guidelines for bioanalytical stability testing.
  • Described two primary experimental methods for whole blood stability assessment.
  • Analyzed a dataset of 1076 validated LC-MS methods.

Main Results:

  • Whole blood and plasma stability profiles were found to be highly correlated.
  • The majority of analyzed methods (1076) were for small molecule quantification.
  • Identified unique case studies from whole blood stability testing.

Conclusions:

  • Whole blood stability testing is a reliable indicator for plasma assay stability.
  • Findings support current regulatory approaches to bioanalytical method validation.
  • Case studies provide practical lessons for optimizing stability testing protocols.