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http://www.fda.gov/Drugs/Guidanc ... ces/ucm124780.htm#4中有提及到:
Do the CGMPs permit the identity test on a pooled, or composite, sample of multiple containers? The CGMPs address the issue of sample compositing directly but only in the context of individual container sampling. Section 21 CFR 211.84(c)(4) explicitly prohibits compositing samples taken from the top, middle, and bottom of a single container when such stratified sampling is considered necessary (as might be the case when moisture content needs to be controlled, particularly when only a portion of a container may be used in a drug product batch). The preamble for 21 CFR 211.84(c)(4) explains further that there "is no general prohibition... on compositing samples [from single containers] where such compositing would not mask subdivisions of the sample that do not meet specifications" (see 1978 preamble, par. 231). Testing individual samples from multiple containers provides a high level of assurance and is consistent with CGMP. Testing a composite sample for identity could satisfy the CGMP regulations (21 CFR 211.84 and 21 CFR 211.160) but only if a manufacturer demonstrates either that the detection of a single non-conforming container is not masked by compositing or that an additional test(s) routinely performed on the composite sample assures that all containers sampled contain the same material. Thus, a purity assay on a composite sample prepared by mixing equal aliquots from each container may be acceptable provided such a test is sufficiently sensitive to reveal the presence of a single non-conforming container. 绿色背景的怎么理解呢??? 大意是: 即使用混合样品进行鉴别检测的前提:不合格容器的鉴别检测不被样品混合所掩盖,或者针对于混合样品的额外常规检测能确保所有被取样容器均为同样物料。 而在检测方法能足够灵敏的揭示某不符合容器物料存在的前提下,使用混合样品进行的含量纯度的检测(从不同容器中进行等量组分混合)是可以被接受的
同时针对于WHO TR 292关于取样的附录中说到关于起始物料,包装容器和最终成品的取样计划不适用生产企业,如何理解??其中关于起始物料的 p plan和r plan是否能用到日常的起始物料取样计划中去呢???但是感觉在做鉴别的时候都是全部取样,而且理化检测样品数量也较多,也工作量很是较大。 http://apps.who.int/iris/bitstream/10665/43157/2/WHO_TRS_929_chi.pdf
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