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Development and Stability Evaluation of In- House Prepared External Quality Controls for Autoimmune Disease Tests

Shin S, Park J

Background: The control samples for external quality assessment (EQA) must be highly stable during the EQA process. This study aimed to evaluate the stability of in-house prepared external quality controls...
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Contents of vitamin B 9 (folate) and B 12 (cobalamins) in commonly consumed seafood menus in Korea

Park EY, Jeong B, Chun J

Purpose: A total of 39 seafood menus were prepared according to the Korean standard recipe, and analyzed for vitamin B 9 (folate) and B 12 (cobalamins) contents, using validated applied...
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Effect of Quality Control Program in Surgical Management of Early Cervical Cancer

Shim JE, Kim MK, Kim YH, Kim SC

Background: Regular assessments of clinical performance in gynecologic cancer surgery is important for the safety of patients. We evaluated the effects of quality control (QC) program on the treatment pattern...
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Introduction to the Rule Book of Pancreatobiliary Endoscopy Certification

Park WS

An endoscopic retrograde cholangiopancreatography (ERCP) procedure requires the highest level of difficulty among endoscopic procedures and the complications related to the procedure is relatively high, and fatal. Training in ERCP...
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Why Should We Implement a System of Endoscopic Retrograde Cholangiopancreatography Certification?

Cho KB

The endoscopic retrograde cholangiopancreatography (ERCP) procedure requires concentration while wearing a heavy radiation protective suit and taking the risk of radiation exposure and complications. In order to successfully perform an...
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Moving Rate of Positive Patient Results as a Quality Control Tool for High-Sensitivity Cardiac Troponin T Assays

Li T, Cao S, Wang Y, Xiong Y, He Y, Ke P, Huang X

Background: A small shift in high-sensitivity cardiac troponin T (hs-cTnT) assays can lead to different result interpretation and consequent patient management. We explored whether a small bias could be detected...
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Usefulness of Reference Change Values for Delta Check Limits in Clinical Laboratory Testing

Lee S, Son JO, Kwon H, Park KH, Yu GG, Han E, Jekarl DW, Kim Y

Background: In this study, the usefulness of within-subject biological coefficient of variation (CVI) and reference change values (RCVs) for delta check limits were investigated by comparing the population distributionbased delta...
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Application of Six Sigma Metrics to Improve Quality Control for Point-of-care Glucose Testing

Park S, Lee W, Jeong TD, Chung HS, Hong KS

Objectives: Six sigma is a quality management system for the assessment of precisionand accuracy. We aim to apply the six sigma rule to quality control (QC) of point-of-care(POC) glucose meters...
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Recommendations for Liquid Chromatography-Mass Spectrometry in the Clinical Laboratory: Part III. Quality Assurance

Kim S, Lee SG, Moon SY, Park HD, Song SH, Lee K, Choi HJ, Lee SY, Clinical Mass Spectrometry Research Committee of the Korean Society of Clinical Chemistry

The use of liquid chromatography-tandem mass spectrometry (LC-MS/MS) in clinical laboratories is increasing and is likely to expand into even more clinical venues in the future. Mass spectrometry is the...
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Preparation of Glutaraldehyde-Treated Red Blood Cells Expressing Weak ABO and RhD Antigens for Use in Tube Methods

Lim YA

Background: Since there is a paucity of red blood cells (RBCs) with a weak expression of A, B, or D antigens, they cannot be used as routine Blood Bank quality...
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Mitochondrial Quality Control in the Heart: New Drug Targets for Cardiovascular Disease

Oh CM, Ryu D, Cho S, Jang Y

Despite considerable efforts to prevent and treat cardiovascular disease (CVD), it has become the leading cause of death worldwide. Cardiac mitochondria are crucial cell organelles responsible for creating energy-rich ATP...
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Production of External Quality Assessment Materials for Anti-Müllerian Hormone Assay

Lee A, Kim HJ

Background: Anti-Müllerian hormone (AMH) is regarded as a sensitive and specific biomarker for assessing the ovarian reserve and has gained widespread clinical use. However, discrepancies between methods, different reference values,...
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Analysis of Matrix Effect of Urine Quality Control Materials in Urine Chemistry Tests

Jeon CH, Kim SG

Background: The National External Quality Assessment Service on urinalysis in Korea has used control materials manufactured by YD (YD Diagnostics, Korea). These materials are composed of phosphate-buffered saline mixed with...
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Report of the Korean Association of External Quality Assessment Service on Clinical Parasitology (2018–2019)

Jeon S, Won EJ, Lee YJ, Kim MJ, Shin MG, Shin JH

Annual proficiency surveys are conducted 3 times a year (2018–2019) by the Korean Association of External Quality Assessment Service. In addition to the image samples (MPI-18-01–08; MPI-19-01–08), the pre-made slide...
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Annual Report of the Korean Association of External Quality Assessment Service on Urinalysis and Fecal Occult Blood Testing (2019)

Jeon CH, Kim SG, Bae YC

In 2019, external quality assessment trials for urinalysis and fecal occult blood (FOB) testing were conducted using data from 1,650 participants. Urine chemistry tests were performed thrice, while urine sediment and...
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Prospective cohort data quality assurance and quality control strategy and method: Korea HIV/AIDS Cohort Study

Kim SM, Choi Y, Choi BY, Kim M, Kim SI, Choi JY, Kim SW, Song JY, Kim YJ, Kee MK, Yoo M, Lee JG, Park BY

OBJECTIVES: The aim of effective data quality control and management is to minimize the impact of errors on study results by identifying and correcting them. This study presents the results...
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Updates on the Disinfection and Infection Control Process of the Accredited Endoscopy Unit

Shin JE, Jung Y, Lee JH, Son BK, Jang JY, Kim HK, Jang BI, The Quality Management Committee and the Disinfection Management Committee of Korean Society of Gastrointestinal Endoscopy

A thorough disinfection and infection control process associated with gastrointestinal endoscopy is highly important for the health and safety of the examinee and the medical staff involved in the procedure....
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Production and Performance Evaluation of External Quality Assessment Materials for Human Epididymis Protein 4 Assay

Lee A, Kim HJ

BACKGROUND: External quality assessment (EQA) is important for standardizing cancer biomarker assays, thereby, ensuring accurate and precise results. Although the human epididymis-specific protein 4 (HE4) assay has been increasingly used...
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A Survey on Current Trends of Breast Imaging Practices in Korea

Yun BL, Kim SM, Jang M, Cho N, Han BK

PURPOSE: This study aimed to analyze the current practices of breast imaging among Korean radiologists. MATERIALS AND METHODS: We invited members of the Korean Society of Breast Imaging (KSBI) working as...
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National Lung Cancer Screening in Korea: Introduction and Imaging Quality Control

Kim HY

Before the implementation of lung cancer screening as a national cancer screening program, the Korean Lung Cancer Screening Project was performed to evaluate its effectiveness and feasibility. A national lung...
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