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Reproducibility and Harmonization in Research Using Biological Standards: The Example of Platelet Agonist Collagen-Related Peptide
Published on: August 4, 2023
Content uniformity and assay requirements in current regulations
Balázs Bánfai1, Katalin Ganzler, Sándor Kemény
1Department of Chemical Engineering, Budapest University of Technology and Economics, Budapest, Hungary. banfai@mail.bme.hu
Abstract:
The acceptance of a tablet batch is based both on the content uniformity test and on the assay. It is shown that these two characteristics are not independent, and the acceptance criteria for them are not even consistent. For content uniformity range three methods of calculation are compared: the present European Pharmacopoeia method, a tolerance range method with improved k tolerance factor and a one-way random effects analysis of variance model. To resolve the inconsistency several options are discussed: applying the holistic content uniformity range alone; using content uniformity standard deviation and assay mean simultaneously or applying a criterion based on Taguchi's quadratic loss function.
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