Calculation of Permitted Daily Exposure (PDE) and concentration limits
RD&C offers calculation and evaluation of PDE for elemental impurities according to ICH Q3D including proposals for assessment of purification procedures, in-process controls, material and excipient specification, selection of appropriate container closure systems, and specification limits for drug substance and drug product.
Discussion of Threshold of Toxicological Concern (TTC)
RD&C offers analysis and evaluation of TTC according to ICH M7 for (potential) mutagenic impurities including in silico methods and purge factor discussions. Additionally, a risk assessment report and a concept for control stratgies will be developed and implemented.