Uncertainty Evaluation of the Determination of Bilastine in Human Plasma by LC-MS/MS
- VernacularTitle:LC-MS/MS法测定人血浆中比拉斯汀含量的不确定度评定
- Author:
Lu LIANG
1
;
Sa LING
;
Yilang ZHAO
;
Hancheng SONG
;
Min WANG
Author Information
1. 湖北省医药工业研究院有限公司 武汉430061
- Keywords:
Bilastine;
Uncertainty evaluation;
Human plasma;
LC-MS/MS
- From:
China Pharmacist
2018;21(10):1850-1853
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To establish a method for the determination of bilastine in human plasma, and evaluate the uncertainty by LC-MS/MS. Methods: The uncertainty sources were obtained from the whole process of the determination including repeatability, e-quipment error, weighting, solution preparation, calibration fitting and plasma sample handling. The uncertainty and synthesized un-certainty of each component were calculated, and then the expanded uncertainty was obtained. Results: The expanded uncertainty for low (15 ng·ml-1), medium (400 ng·ml-1) and high(1 200 ng·ml-1) level of bilastine was 1. 45 ng·ml-1, 28. 72 ng·ml-1 and 74. 61 ng·ml-1, respectively (k=2, P=95% ). Conclusion: The uncertainty in the determination of bilastine in human plasma is mainly caused by equipment error, solution preparation, protein precipitation and calibration fitting (especially at low level).
