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Performance Evaluation of the Third-Generation Elecsys FT4 III Assay for Free Thyroxine
- Title
- Performance Evaluation of the Third-Generation Elecsys FT4 III Assay for Free Thyroxine
- Authors
- Kim, Soo-Kyung; Jeong, Tae-Dong
- Ewha Authors
- 정태동; 김수경
- Issue Date
- 2020
- Journal Title
- CLINICAL LABORATORY
- ISSN
- 1433-6510

- Citation
- CLINICAL LABORATORY vol. 66, no. 8, pp. 1635 - 1638
- Keywords
- evaluation; free thyroxine; performance
- Publisher
- CLIN LAB PUBL
- Indexed
- SCIE; SCOPUS

- Document Type
- Article
- Abstract
- Background: Roche Diagnostics has recently released the Elecsys FT4 III, Roche's third-generation reagent for free thyroxine. We aim to evaluate the analytical performance of the Elecsys FT4 III. Methods: The precision and linearity of the Elecsys FT4 III assay were evaluated according to Clinical and Laboratory Standards Institute procedures. The results of the third-generation assay were compared with that of Roche's second-generation assay (Elecsys FT II) on a Roche cobas e801 modular analyzer. Results: The coefficient of variation of within-laboratory variation was less than 2.6% for the control materials and patient samples. The linearity was confirmed over a range of 0.41 to 7.52 ng/dL. The mean difference between the second- and third-generation reagents was 0.0026 ng/dL (95% confidence interval, -0.0172 to +0.0224 ng/dL). Conclusions: The analytical performance of the Elecsys FT4 III assay for free thyroxine is clinically acceptable.
- DOI
- 10.7754/Clin.Lab.2020.191103
- Appears in Collections:
- 의과대학 > 의학과 > Journal papers
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