The CGMP regulations do not specify what techniques or tests are to be used to ensure that one’s test methods are stability-indicating. However, evaluating the specificity of the test methods during forced degradation studies (i.e., exposing drug to extremes of pH, temperature, oxygen, etc.) of drug substance and drug product often is necessary to ensure that stability test methods are stability-indicating. But in certain circumstances conducting a forced degradation study of just the drug substance may be sufficient to evaluate the stability-indicating properties of a test method.# d0 L$ i# z0 J9 B% `% U8 V
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这是FDA的观点。