Reformation and evaluation of an operating procedure for detecting syphilitic anticardiolipin reagin
10.3760/cma.j.issn.0412-4030.2011.05.015
- VernacularTitle:梅毒非特异性类脂质反应素抗体试验操作的改进及应用评价
- Author:
Yang YANG
;
Lei WU
;
Yuelan JIN
;
Yanqun JIANG
;
Ying LIU
;
Xiaoyan LIU
;
Zhenhua TANG
;
Zhengyin ZHANG
;
Kangrong HU
;
Guobao GU
;
Long XU
;
Xiaohui MO
;
Xuemin WANG
;
Weiming GU
- Publication Type:Journal Article
- Keywords:
Syphilis serodiagnosis;
Reference standards;
Quality assurance
- From:
Chinese Journal of Dermatology
2011;44(5):336-338
- CountryChina
- Language:Chinese
-
Abstract:
Objective To estimate the application value of a standard operating procedure (SOP) in the detection of syphilitic anticardiolipin reagin. Methods Clinical laboratories from 9 local hospitals in Shanghai participated the program. Quality control samples with unknown target value were qualitatively and quantitatively examined according to the uniform SOP in these laboratories with the same reagent and facility of horizontal reaction. External quality assessment (EQA) was carried out by using seven serum samples with no, or low (1∶ 128 dilution) to high (1∶1 dilution) concentrations of target before and after the implementation of SOP. The test results were statistically analyzed and the reasons for the detecting error were assessed. Results A total of 388 tests were performed in the 9 clinical laboratories. The total accuracy rate was 93.0%, including 40.2% in the detection of samples with 1 ∶ 8 dilution of target, 49.2% in the detection of samples with 1 ∶ 16 dilution of target, and 3.6% in the detection of samples with 1 ∶ 32 dilution of target. No forward bias was observed in these tests. There was a significant difference in the accuracy rate between the two times of EQA before and after the implementation of SOP (x2 = 4.17, P < 0.05). Conclusions The improved standard procedure for nontreponemal antigen test is beneficial to the decrease of testing error, and may provide a basis for the establishment of SOP and implementation of internal quality assessment.
