The deviation was caused by human error. Due to the lack of standard data, the content of 8-oxo-b1a in 4015-a200904 / 56m batch of stability samples could not be calculated. The atlas data of this project was invalid and retained, and the original sample package was needed to re detect 8-oxo-b1a project; At the same time, the results of content and related substances were not affected, and this deviation had no effect on the stability trend study. After reviewing the experiments of Huang Hong, the experimenter, no similar deviation caused by standard solution leakage was found, so the quality risk of products and batches detected by the experimenter in the early stage was controllable. For this deviation, CAPA was formulated: training of relevant personnel, h0-am-10025-r02 high performance liquid chromatography test record, version 00, self inspection list of inspectors before sample injection, emphasizing the need to check and confirm whether the steps of solution preparation are correct.<br>
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