目的能力比对检验(Proficiency testing,PT)是室间质评的重要方案,通过参加美国病理家学会(College of American Pathologist,CAP)能力比对检验,监控实验室检验能力,确保检测结果的准确性、可重复性和可比性,促进实验室质量改进。方法...目的能力比对检验(Proficiency testing,PT)是室间质评的重要方案,通过参加美国病理家学会(College of American Pathologist,CAP)能力比对检验,监控实验室检验能力,确保检测结果的准确性、可重复性和可比性,促进实验室质量改进。方法中国医学科学院北京协和医学院北京协和医院检验科实验室于2009年参加CAP真菌检测能力验证活动。实验室收到标本后,按照常规真菌标本进行真菌学检查和免疫学测定,在规定的时间内将检测结果回报给CAP。CAP在同方法组内对检测结果进行评估,并提供所有参与实验室的结果统计报告。结果截至目前完成2009年3次共17份标本,回报结果正确率:F-A和F-C为100%,F-B为80%,结果评价均为满意。结论通过参加CAP能力比对检验,实现对检验结果准确性的持续性监测,提高真菌感染实验室诊断水平。展开更多
Throughout the United States, laboratories use different sampling methods (“Direct Fill” vs. “Submerged Bottle” methods), sample preparations (“Simultaneous Drawing” vs. “Separate Drawing”), scintillators (“M...Throughout the United States, laboratories use different sampling methods (“Direct Fill” vs. “Submerged Bottle” methods), sample preparations (“Simultaneous Drawing” vs. “Separate Drawing”), scintillators (“Mineral Oil” vs. “Opti-Fluor”), volume of water plus scintillator in the cocktail (“8 mL plus 8 mL” vs. “10 mL plus 10 mL”), and liquid scintillation counting assays (“Full Spectrum: 0 - 2000 keV” vs. “Region of Interest: 130 - 700 keV”) for analyzing radon (222Rn) in water. We compared these and few other variables on the recovery of radon from two “Proficiency Test (PT)” samples and four “Household Well Water” samples from Georgia. The “130 - 700 keV” assay had significantly higher radon recovery than the “0 - 2000 keV” assay. The “Direct Fill” sampling produced significantly lower radon recovery than the “Submerged Bottle” sampling. “Simultaneous Drawing” of both scintillator and water sample yielded higher radon recovery than “Separate Drawing”. Air bubble in the samples resulted in significant loss of radon gas;and such loss became greater as the air bubble was larger. A “10 mL scintillator + 10 sample” combination appeared better than “8 mL scintillator + 8 mL sample”. Mixing scintillator and sample in the laboratory, when compared with doing it on-site, was found superior for better results and practicality of testing radon in private well waters. “Mineral Oil” scintillator provided higher radon activity than “Opti-Fluor”. However, in 10 consecutive measurements of the two proficiency test (PT) samples at 60 days interval (i.e., with full ingrowing), “Mineral Oil” overestimated the radon activity compared to the predicted/assigned value in most cases, whereas “Opti-Fluor” invariably produced results close to the predicted/assigned value. There were noticeable temporal variations in both radon and uranium concentrations in the study wells;nevertheless, uranium and radon concentrations had good positive correla展开更多
目的此项能力验证旨在了解国内相关领域实验室对化妆品中重金属汞总量检测的整体水平。方法2013年由中国国家认证认可监督管理委员会(Certification and Accreditation Administration of the People's Republic of China)组织,31...目的此项能力验证旨在了解国内相关领域实验室对化妆品中重金属汞总量检测的整体水平。方法2013年由中国国家认证认可监督管理委员会(Certification and Accreditation Administration of the People's Republic of China)组织,31个省、自治区和直辖市127家实验室参加此项能力验证。本研究介绍了此次能力验证的实施情况,包括方案设计、样品制备及检验、统计结果及技术分析。结果通过初测和补测试验,实验室检测结果满意率为94.5%。结论参加能力验证的绝大多数实验室可以准确检测化妆品中总汞元素含量,具备了化妆品中检测有害重金属的能力。展开更多
文摘目的能力比对检验(Proficiency testing,PT)是室间质评的重要方案,通过参加美国病理家学会(College of American Pathologist,CAP)能力比对检验,监控实验室检验能力,确保检测结果的准确性、可重复性和可比性,促进实验室质量改进。方法中国医学科学院北京协和医学院北京协和医院检验科实验室于2009年参加CAP真菌检测能力验证活动。实验室收到标本后,按照常规真菌标本进行真菌学检查和免疫学测定,在规定的时间内将检测结果回报给CAP。CAP在同方法组内对检测结果进行评估,并提供所有参与实验室的结果统计报告。结果截至目前完成2009年3次共17份标本,回报结果正确率:F-A和F-C为100%,F-B为80%,结果评价均为满意。结论通过参加CAP能力比对检验,实现对检验结果准确性的持续性监测,提高真菌感染实验室诊断水平。
文摘Throughout the United States, laboratories use different sampling methods (“Direct Fill” vs. “Submerged Bottle” methods), sample preparations (“Simultaneous Drawing” vs. “Separate Drawing”), scintillators (“Mineral Oil” vs. “Opti-Fluor”), volume of water plus scintillator in the cocktail (“8 mL plus 8 mL” vs. “10 mL plus 10 mL”), and liquid scintillation counting assays (“Full Spectrum: 0 - 2000 keV” vs. “Region of Interest: 130 - 700 keV”) for analyzing radon (222Rn) in water. We compared these and few other variables on the recovery of radon from two “Proficiency Test (PT)” samples and four “Household Well Water” samples from Georgia. The “130 - 700 keV” assay had significantly higher radon recovery than the “0 - 2000 keV” assay. The “Direct Fill” sampling produced significantly lower radon recovery than the “Submerged Bottle” sampling. “Simultaneous Drawing” of both scintillator and water sample yielded higher radon recovery than “Separate Drawing”. Air bubble in the samples resulted in significant loss of radon gas;and such loss became greater as the air bubble was larger. A “10 mL scintillator + 10 sample” combination appeared better than “8 mL scintillator + 8 mL sample”. Mixing scintillator and sample in the laboratory, when compared with doing it on-site, was found superior for better results and practicality of testing radon in private well waters. “Mineral Oil” scintillator provided higher radon activity than “Opti-Fluor”. However, in 10 consecutive measurements of the two proficiency test (PT) samples at 60 days interval (i.e., with full ingrowing), “Mineral Oil” overestimated the radon activity compared to the predicted/assigned value in most cases, whereas “Opti-Fluor” invariably produced results close to the predicted/assigned value. There were noticeable temporal variations in both radon and uranium concentrations in the study wells;nevertheless, uranium and radon concentrations had good positive correla
文摘目的此项能力验证旨在了解国内相关领域实验室对化妆品中重金属汞总量检测的整体水平。方法2013年由中国国家认证认可监督管理委员会(Certification and Accreditation Administration of the People's Republic of China)组织,31个省、自治区和直辖市127家实验室参加此项能力验证。本研究介绍了此次能力验证的实施情况,包括方案设计、样品制备及检验、统计结果及技术分析。结果通过初测和补测试验,实验室检测结果满意率为94.5%。结论参加能力验证的绝大多数实验室可以准确检测化妆品中总汞元素含量,具备了化妆品中检测有害重金属的能力。
