Study on Proficiency Testing of Determination Potassium in Serum.
10.3969/j.issn.1671-7104.2021.02.020
- Author:
Ting YU
1
;
Liying MA
1
;
Juanli ZHANG
2
;
Shoufang QU
1
;
Nan SUN
1
;
Jing SUN
1
;
Lili LI
3
;
Xinhua XIANG
4
Author Information
1. National Institutes for Food and Drug Control, Beijing, 100050.
2. Medical Instrument Testing Institute of Henan, Zhengzhou, 450003.
3. National Institutes for Food and Drug Control, Beijing, 100050. E-mail:lilili@nifdc.org.cn.
4. National Institutes for Food and Drug Control, Beijing, 100050. E-mail:xiangxh@nifdc.org.cn.
- Publication Type:Journal Article
- Keywords:
assigned value;
potassium in serum;
proficiency testing
- MeSH:
Drinking Water/analysis*;
Laboratories;
Laboratory Proficiency Testing;
Potassium
- From:
Chinese Journal of Medical Instrumentation
2021;45(2):219-223
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE:To evaluate the capacity of laboratories participated in the proficiency testing (PT) of determination potassium in serum and improve the quality of testing, and put forward technical suggestions for unsatisfied laboratories.
METHODS:According to the requirements of CNAS related documents, the homogeneity and stability of the real PT sample were evaluated by one-way ANOVA and t test, respectively. The values of real PT samples were assigned by reference method which was used in PT results assay. It is required that the deviation of value of real PT samples (code:2, 3, 5) between the measured value and the assigned value shall be within ±15.0%. The precision of values for all samples should not be greater than 3.0%.
RESULTS:All the laboratories submitted valid data according to the requirements. Only one laboratory did not meet the requirements, and the satisfaction rate was 90.9%.
CONCLUSIONS:The ability of most of laboratories are accurate and reliable.
