April 2nd 2025
Susan J. Schniepp, distinguished fellow at Regulatory Compliance Associates, and Rona LeBlanc-Rivera, PhD, principal consultant, Regulatory Affairs at Regulatory Compliance Associates, answer some questions about FDA’s January 2025 21 CFR 211.110 guidance document.
In-Vitro Permeation Test Data Analysis with MS Excel as per FDA’s Guidance
July 3rd 2023FDA’s new guidance on in-vitro permeation test studies published in October 2022 gives technical and statistical requirements for conducting these tests to compare topical generic drugs with their reference products.
Total Analytical Error in Validation of Analytical Procedures of Pharmaceuticals
May 2nd 2023This paper demonstrates how assay data sets of a formulated liquid product, drug substance, and an impurity, obtained from combined accuracy-precision studies, are evaluated to calculate statistical intervals (prediction and tolerance intervals) and to graphically display the total analytical error (TAE) to account for the systematic and random errors.