Comparison of the sigma metrics using the total error allowable algorithm with variation of bias source by Sonny Feisal Rinaldi, Anisa Agustia Ibadurrahmah, Surya Ridwanna, Harianto Harianto

“…Described in the document Clinical and Laboratory Standards Institute (CLSI) EP15- A3, the use of target values can be sourced from certified reference standards, survey materials from the Proficiency Testing (PT)/External Quality Assessment (EQA), materials used in inter-laboratory quality control programs and internal quality control materials with predetermined targets. …”
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Transmission and resistome of extremely drug-resistant tuberculosis in Beijing, China: A retrospective population-based epidemiological study by Haiping Guo, Jun An, Shanshan Li, Beichuan Ding, Zhiguo Zhang, Wei Shu, Yuanyuan Shang, Yi Wang, Ken Cheng, Yufeng Wang, Zhongtan Xue, Weicong Ren, Junhua Pan, Tao Luo, Yu Pang

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Guidelines for Best Practice for Staffing of ART Laboratories and Professional Development of IVF Scientists by Yee Shan Lisa Lee, Sally Catt, Simon Cooke, Kylie Fisk, Jeanette Mackenzie, Jayne Mullen, Nyssa Pohl, Tim Rabbitt, Taneeka Rutherford, Cathy Tully

“…Based on a cycle with 10 eggs, the average time taken to do each procedure was considered as well as the complexity of the task. Laboratory quality control (QC), other administrative tasks, and leave days are reflected in the calculator. …”
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Using an adaptive approach to the development of water purification system by A. P. Levchuk, V. I. Maksin

“…Therefore, this paper analyzes the current experience of developing small autonomous water purification systems for drinking water supply, which do not require constant presence of the operator and laboratory quality control of water and can work automatically in difficult conditions. …”
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JinQi-Jiangtang tablet, a Chinese patent medicine, for pre-diabetes: a randomized controlled trial by Hu Jing, Wang Xuemei, Li Xiantao, Wang Baohe, Wang Hui, Song Yuzhen, Zhang Junhua, Shang Hongcai, Guo Liping, Ren Ming, Cao Hongbo, Wang Dehui, Chen Jianzong, Li Shuanglei, Chen Liming

“…Qualitative control will be implemented and a number of standard operating processes (SOPs) will be formed throughout the study: laboratory quality control measures; compliance control for researchers and participants; researcher training before study; supervision; investigational drug management and others.…”
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Application of Normal Distribution to Estimate the Quality of Regional Geochemical Survey Samples by ZHAO Zhi-fei, YAN Hui, YAO Lan, FANG Jin-dong, TANG Xing-min

“…The quality of regional geochemical survey samples is currently estimated indirectly by internal and external laboratory quality control. The method described here effectively improves the quality of geochemical samples. …”
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Quantitative assessment of H&E staining for pathology: development and clinical evaluation of a novel system by Catriona Dunn, David Brettle, Martin Cockroft, Elizabeth Keating, Craig Revie, Darren Treanor

“…Conclusion The proposed method has been shown to reliably quantify stain uptake, providing an effective laboratory quality control method for stain variation. This is especially important for whole slide imaging and the future development of artificial intelligence in digital pathology.…”
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Preparation and Certification of A Titanium Isotopic Standard Solution by TANG Suo-han, LI Jin, WANG Jin-hui, PAN Chen-xu

“…Until now, no Ti isotopic reference material has been reported worldwide, which imposes restriction upon analytical method establishment and laboratory quality control. In this paper, a newly prepared Ti isotopic standard solution is introduced. …”
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Preparation, Optimization and Evaluation of Chitosan-Based Avanafil Nanocomplex Utilizing Antioxidants for Enhanced Neuroprotective Effect on PC12 Cells by Mallesh Kurakula, Raghavendra Naveen N., Bhaumik Patel, Ravi Manne, Devang B. Patel

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Preparation of enteroinvasive Escherichia coli reference materials for food analysis by ZHAO Linna, WANG Xueshuo, LIU Na, CUI Shenghui, LU Yong

“…ObjectiveTo satisfy the demands of laboratory quality control and proficiency testing for the detection of enteroinvasive Escherichia coli (EIEC), a stable EIEC reference material was developed with independent intellectual property rights, good stability and clear background genomic information.MethodsNGS Technique was used to sequence the whole genome of enteroinvasive Escherichia coli (CMCC 44840), bioinformatics analysis was performed to identify the species, serotype, MLST type and virulence genes; EIEC lyophilized samples with 103 CFU were prepared by freeze-drying method ; The homogeneity test was performed according to CNAS-GL017, and the result were statistically analyzed by one-way ANOVA; The samples were stored at -20, 4, 25 and 37 ℃, respectively, and their storage stability and transport stability were evaluated; Five kinds of food matrix samples were used to verify the applicability of reference materials, and three laboratories were organized for collaborative calibration.ResultsThe genome size of CMCC 44840 was 4.96 Mb, the GC content was 50.7%, and the genome contained 5424 coding genes. …”
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Digital PCR-Based Characterization of a <i>g10evo-epsps</i> Gene-Specific Matrix Reference Material for Its Food and Feed Detection by Xiaoyun Chen, Huiru Yu, Pengfei Wang, Cheng Peng, Xiaofu Wang, Xiaoli Xu, Junfeng Xu, Jingang Liang, Liang Li

“…The <i>g10evo-epsps</i> matrix CRM described here may be used for qualitative and quantitative testing, method evaluation, laboratory quality control, and other related fields.…”
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Development of Certified Reference Materials of Polycyclic Aromatic Hydrocarbons, Organochlorine Pesticides and Polychlorinated Biphenyls in Sediments by TIAN Qin, TONG Ling, AN Ziyi, XU Chunxue, SUN Huizhong, DIAO Jinling

“…This series of CRMs can be used in analytical method validation, laboratory quality control, laboratory analysis ability assessment.…”
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Pemantapan mutu dan mutu hasil analisis laboratorium kimia klinik swasta di Kalimantan Selatan = Quality control and quality of laboratory result at private clinical chemistry labo... by Perpustakaan UGM, i-lib

“…Conclusion: The score of chemical laboratory quality control of private clinics in South Kalimantan in the pre-analytical, analytical and post-analytical stages were included in the category of good. …”

NGS-Based Analysis of Atypical Deep Penetrating Nevi by Antonella Manca, Maria Cristina Sini, Anna Maria Cesinaro, Francesca Portelli, Carmelo Urso, Maria Lentini, Roberta Cardia, Llucia Alos, Martin Cook, Sara Simi, Panagiotis Paliogiannis, Vincenzo De Giorgi, Antonio Cossu, Giuseppe Palmieri, Daniela Massi

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The use of microbead-based spoligotyping for <it>Mycobacterium tuberculosis </it>complex to evaluate the quality of the conventional method: Providing guidelines for Quality Assura... by Garzelli Carlo, Rastogi Nalin, Al-Hajoj Sahal, Herranz Marta, de Viedma Darío, Rasolofo-Razanamparany Voahangy, Stoffels Karolien, Fauville-Dufaux Maryse, Elias Atiná, Gomes Harrison, Rigouts Leen, Ruimy Raymond, Kremer Kristin, Ritacco Viviana, Zhang Jian, Abadia Edgar, Tortoli Enrico, Suffys Philip N, van Soolingen Dick, Refrégier Guislaine, Sola Christophe

“…However, until now no inter-laboratory quality control study had been undertaken to validate this technique. …”
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Evaluation of cerebrospinal fluid ubiquitin C-terminal hydrolase-L1, glial fibrillary acidic protein, and neurofilament light protein as novel markers for the diagnosis of neurosyp... by Rui Chen, Li-Rong Lin, Yao Xiao, Wu-Jian Ke, Tian-Ci Yang

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Quantification of Minimal Disease by Digital PCR in ALK-Positive Anaplastic Large Cell Lymphoma: A Step towards Risk Stratification in International Trials? by Christine Damm-Welk, Federica Lovisa, Giorgia Contarini, Jette Lüdersen, Elisa Carraro, Fabian Knörr, Jan Förster, Martin Zimmermann, Alessandra Sala, Luciana Vinti, Annalisa Tondo, Marta Pillon, Wilhelm Woessmann, Lara Mussolin

“…We aimed to assess droplet digital PCR for quantification of minimal disease in an inter-laboratory setting in a large cohort of 208 uniformly treated ALCL patients. Inter-laboratory quality control showed high concordance. Using a previously described cut-off of 30 copies <i>NPM-ALK/</i>10⁴ copies <i>ABL1</i> (NCN) in bone marrow and peripheral blood, MDD quantification allowed identification of very high-risk patients (5-year PFS% 34 ± 5 for patients with ≥30 NCN compared to 74 ± 6 and 76 ± 5 for patients with negative or <30 NCN, respectively, <i>p</i> < 0.0001). …”
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Preparation of Reference Materials for Carbon and Nitrogen Isotopes of Organic Materials by LI Ke, ZHANG Lin, LIU Fu-liang, JIA Yan-kun

“…However, in recent years, with the widespread use of carbon and nitrogen isotopes in laboratory quality control, method evaluation, and instrument calibration, the market demand continues to increase, and the types and quantities of carbon and nitrogen isotope reference materials developed by IAEA are gradually unable to meet the rapid development of scientific research. …”
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Critical Comparison of Analytical Performances of Two Immunoassay Methods for Rapid Detection of Aflatoxin M₁ in Milk by Ivan Pecorelli, Natascia Guarducci, Cristoph von Holst, Rita Bibi, Michelangelo Pascale, Biancamaria Ciasca, Antonio F. Logrieco, Veronica M. T. Lattanzio

“…Method verification through long-term intra-laboratory quality control (QC) measurements confirmed the results from the validation study. …”
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Rapid Detection of Ethambutol-Resistant Mycobacterium tuberculosis from Sputum by High-Resolution Melting Analysis in Beijing, China by Wang J, Zhao W, Liu R, Huo F, Dong L, Xue Y, Wang Y, Xue Z, Ma L, Pang Y

“…Jun Wang,1,* Weijie Zhao,2,* Rongmei Liu,1,* Fengmin Huo,3 Lingling Dong,3 Yi Xue,3 Yufeng Wang,4 Zhongtan Xue,4 Liping Ma,1 Yu Pang3 1Department of Tuberculosis, Beijing Chest Hospital, Capital Medical University/Beijing Tuberculosis &amp; Thoracic Tumor Research Institute, Beijing 101149, People&rsquo;s Republic of China; 2Clinical Trial Agency Office, Beijing Chest Hospital, Capital Medical University/Beijing Tuberculosis &amp; Thoracic Tumor Research Institute, Beijing 101149, People&rsquo;s Republic of China; 3National Clinical Laboratory on Tuberculosis, Beijing Chest Hospital, Capital Medical University/Beijing Tuberculosis &amp; Thoracic Tumor Research Institute, Beijing 101149, People&rsquo;s Republic of China; 4Department of Laboratory Quality Control, Innovation Alliance on Tuberculosis Diagnosis and Treatment (Beijing), Beijing 101149, People&rsquo;s Republic of China*These authors contributed equally to this workCorrespondence: Yu PangNational Clinical Laboratory on Tuberculosis, Beijing Chest Hospital, Capital Medical University/Beijing Tuberculosis &amp; Thoracic Tumor Research Institute, No. 9, Beiguan Street, Tongzhou District, Beijing 101149, People&rsquo;s Republic of ChinaTel/Fax +86-10-8950 9359Email pangyupound@163.comLiping MaDepartment of Tuberculosis, Beijing Chest Hospital, Capital Medical University/Beijing Tuberculosis &amp; Thoracic Tumor Research Institute, No. 9, Beiguan Street, Tongzhou District, Beijing 101149, People&rsquo;s Republic of ChinaTel/Fax +86-10-8950 9322Email malipinghm@hotmail.comObjective: We conducted a retrospective study to evaluate the performance of MeltPro assay for detecting ethambutol (EMB) susceptibility of Mycobacterium tuberculosis (MTB) isolates in sputum specimens in Beijing, China.Methods: Smear-positive TB patients undergoing MeltPro assay in the Beijing Chest Hospital between January 2019 and December 2019 were included. …”
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