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Report of the Korean Association of External Quality Assessment Service on General and Specialized Coagulation Tests in Korea (2016–2019)

Jang S, Kim H, goong SN, Kim T

The Korean Association of External Quality Assessment Service offered to conduct a proficiency test program for general and specialized coagulation testing. In this report, we have summarized the results of...
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Annual Report of the Korean Association of External Quality Assessment Service on General Chemistry (2020)

Lee YW

In 2020, the general chemistry proficiency testing program of the Korean Association of External Quality Assessment Service consisted of routine and urine chemistry programs including 29 and 13 test items,...
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Standardization Status of Total Cholesterol Concentration Measurement: Analysis of Korean External Quality Assessment Data

Yoon YA, Lee YW, Kim S, Lee K, Park HD, Chun S, Min WK

Background: Total cholesterol concentration measurement is important in the diagnosis of dyslipidemia and evaluation of cardiovascular disease risk factors. Measurement reliability for obtaining an accurate total cholesterol concentration requires procedure...
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A Pilot Project for Expansion of the External Quality Assessment Program in Transfusion Medicine: Extended Antigen Typing

Chung Y, Kim JS, Yang JJ, Kim H, Hwang SH, Oh HB, Ko DH

Background: As the need for expansion of the external quality assessment (EQA) scheme for transfusion medicine in Korea has increased, we performed a pilot project of extended antigen typing for...
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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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Report of the Korean Association of External Quality Assessment Service on Serologic Tests for Syphilis (2018–2019)

Ma T, Choi HW, Choi R, Lee SG, Kee SJ

The 2018–2019 surveys on the external quality assessment scheme for serologic tests for syphilis in Korea were conducted by the Korean Association of External Quality Assessment Service. Proficiency testing (PT)...
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Exploratory Investigation for Improvement of the External Quality Assessment Scheme for Transfusion Medicine

Yang JJ, Kim JS, Chung Y, Kim H, Ko DH, Hwang SH, Oh HB

Background: This study summarizes a survey conducted to improve and expand the external quality assessment (EQA) scheme for transfusion in Korea. Methods: The EQA items provided by the College of American...
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Schemes and Performance Evaluation Criteria of Korean Association of External Quality Assessment (KEQAS) for Improving Laboratory Testing

Kim S, Lee K, Park HD, Lee YW, Chun S, Min WK

External quality assessment (EQA) is important for evaluating clinical laboratories and enhancing their testing quality. EQA schemes are variable; thus, it is crucial that the EQA organizers share their experiences...
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Commutability Assessment of Candidate External Quality Assessment Materials for Aminotransferase Activity Measurements Based on Different Approaches in China

Long Q, Qi T, Zhang T, Wang J, Zeng J, Yan Y, Wang M, Huang W, Zhao H, Chen W, Zhang C

Background: Using commutable external quality assessment (EQA) materials is important for monitoring successful harmonization efforts. We assessed the commutability of four human serum pool (HSP) preparations to identify candidate EQA...
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Annual Report of the Korean Association of External Quality Assessment Service on General Chemistry (2019)

Lee YW

In 2019, the general chemistry proficiency testing program of the Korean Association of External Quality Assessment Service consisted of routine chemistry and urine chemistry programs including 30 and 13 test...
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Development of an Operational Plan for the Liquid Biopsy External Quality Assessment Program in Korea

Ahn S, Kim HK, Kim JH, Lee W, Chun S, Lee WG, Min WK

Background: Liquid biopsy is a useful assay for the diagnosis, treatment, and prognosis prediction of solid tumors and its clinical application is expanding. Therefore, the need for developing an External...
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Report of the Korean Association of ExternalQuality Assessment Service on MetaboliteTesting (2018–2019)

Lee SY

External quality assessment (EQA) trials of conventional newborn screeningtests for phenylketonuria, galactosemia, congenital adrenal hyperplasia,maple syrup urine disease, homocystinuria, and congenital hypothyroidism,as well as extended newborn screening tests using tandem...
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Report of the Korean Association of ExternalQuality Assessment Service on AutoimmuneTesting (2018–2019)

Chung HJ, Moon HW, Yi J

Under the Korean Association of External Quality Assessment Service,autoimmune proficiency testings (PT) for six test items were performed in2018–2019 for laboratory quality improvement. We conducted two trials peryear and sent...
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Current Status of Proficiency Testing Programs and Development of Reference Materials for Severe Acute Respiratory Syndrome Coronavirus 2 Molecular Diagnostic Tests

Hur KH, Park K, Yang JJ, Kim MN, Sung H

Laboratory preparedness and rapid expansion of testing capacity are essential for controlling the coronavirus disease 2019 (COVID-19) outbreak. Such efforts require the prompt implementation of authorized emergencyuse test kits and extensive...
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Report of the Korean Association of External Quality Assessment Service on Hepatitis Serology (2018–2019)

Cho EJ, Choi AR, Ryu JH, Yun SJ, Oh EJ

As a diagnostic immunology program of the Korean Association of External Quality Assessment Service, two trials were organized to assess the external quality of hepatitis serology in 2018 and 2019....
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Quality of Same-Day Sputum Smears Microscopy and Presumptive Tuberculosis Patients Drop-out at Health Facilities of Addis Ababa, Ethiopia

Taddese BD, Misganaw A

BACKGROUND: Same-day sputum microcopy is recommended in areas where sputum smear microscopy external quality assessment (EQA) is effectively implemented and sturdy. In Addis Ababa, the status of EQA and drop-out...
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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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Annual Report of Korean Association of External Quality Assessment Service on Histocompatibility Testing (2018)

Kang ES

Here, we report the results of the first histocompatibility proficiency testing (PT) performed by the Korean Association of External Quality Assessment Service in 2018. The directly prepared PT specimens of...
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Annual Report of the Korean Association of External Quality Assessment Service on General Chemistry (2018)

Lee YW

In 2018, the general chemistry proficiency testing program of the Korean Association of External Quality Assessment Service consisted of the routine chemistry and urine chemistry programs including 32 and 13...
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Report of the Korean Association of External Quality Assessment Service on Complement and Immunoglobulin (2018)

Kim KH

In 2018, the complement and immunoglobulin proficiency testing program of the Korean Association of External Quality Assessment Service included complement, free light chain, immunoglobulin, and anti-cyclic citrullinated peptide (anti-CCP). Tests...
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