请帮忙分析下面这句话的意思,是不是只需要提供内控方法的LOD和LOQ就可以了?还需要提供EP方法的LOD和LOQ吗? Concerning the HPLC method for related substances: in your in-house validation, LOD and LOQ should be provided for each impurity detected in your API in order to clarify the results “Not Detected” that are given in the cross-validation data and state whether your in-house method and the EP one are equivalent.