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- Title
A Chemiluminescent Immunoassay for Osteocalcin in Human Serum and a Solution to the "Hook Effect".
- Authors
Han, Shuang; Xue, Yifeng; Zhang, Junlan; Huang, Jianrong; Liu, Xiuxia; Yang, Yankun; Bai, Zhonghu; Wang, Chunxin
- Abstract
A chemiluminescent immunoassay for human serum osteocalcin, or bone Gla protein, was established using a double-antibody sandwich model. Examination of the hook effect revealed that it was significantly reduced, and no hook effect was observed at an osteocalcin concentration of 4000 ng/mL. The established method showed good analytical performance and thermal stability. The limit of detection was 0.03 ng/mL. The intra-assay coefficient of variation (CV) was 3.22%–5.64%, the interassay CV was 4.42%–7.25%, and the recovery rate was 93.22%–107.99%. Cross-reactivity (CR) was not observed with bovine, rat, mouse, rabbit, or porcine samples. The developed method showed a good correlation with the N-MID product from Roche. In total, 1069 clinical patient samples were measured using the reagent kit developed in this study.
- Subjects
OSTEOCALCIN; IMMUNOASSAY; BONES; SERUM; CALRETININ; HOOKS
- Publication
Journal of Analytical Methods in Chemistry, 2020, p1
- ISSN
2090-8865
- Publication type
Article
- DOI
10.1155/2020/8891437