Effect of Accreditation on Accuracy of Diagnostic Tests in Medical Laboratories
Annals of Laboratory Medicine
;
: 213-222, 2017.
Artículo
en Inglés
| WPRIM
| ID: wpr-183525
ABSTRACT
BACKGROUND:
Medical laboratories play a central role in health care. Many laboratories are taking a more focused and stringent approach to quality system management. In Korea, laboratory standardization efforts undertaken by the Korean Laboratory Accreditation Program (KLAP) and the Korean External Quality Assessment Scheme (KEQAS) may have facilitated an improvement in laboratory performance, but there are no fundamental studies demonstrating that laboratory standardization is effective. We analyzed the results of the KEQAS to identify significant differences between laboratories with or without KLAP and to determine the impact of laboratory standardization on the accuracy of diagnostic tests.METHODS:
We analyzed KEQAS participant data on clinical chemistry tests such as albumin, ALT, AST, and glucose from 2010 to 2013. As a statistical parameter to assess performance bias between laboratories, we compared 4-yr variance index score (VIS) between the two groups with or without KLAP.RESULTS:
Compared with the group without KLAP, the group with KLAP exhibited significantly lower geometric means of 4-yr VIS for all clinical chemistry tests (P<0.0001); this difference justified a high level of confidence in standardized services provided by accredited laboratories. Confidence intervals for the mean of each test in the two groups (accredited and non-accredited) did not overlap, suggesting that the means of the groups are significantly different.CONCLUSIONS:
These results confirmed that practice standardization is strongly associated with the accuracy of test results. Our study emphasizes the necessity of establishing a system for standardization of diagnostic testing.
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Sesgo
/
Pruebas de Química Clínica
/
Atención a la Salud
/
Pruebas Diagnósticas de Rutina
/
Glucosa
/
Acreditación
/
Corea (Geográfico)
Tipo de estudio:
Estudio diagnóstico
/
Estudio pronóstico
País/Región como asunto:
Asia
Idioma:
Inglés
Revista:
Annals of Laboratory Medicine
Año:
2017
Tipo del documento:
Artículo
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