The value of clinical application of leukocyte classification alarm system (Q-Flag) for Sysmex XT-1800i blood cell analyzer
10.3969/j.issn.1673-4130.2015.14.026
- VernacularTitle:Sysmex XT-1800i 血细胞分析仪白细胞分类报警系统（Q-Flag）的临床应用价值
- Author:
Bing HAN
;
Yang GAO
;
Kang LI
;
Qisheng SONG
;
Bin YU
- Publication Type:Journal Article
- Keywords:
Sysmex XT-1800i blood cell analyzer;
alarm information;
re-examination;
blood cells
- From:
International Journal of Laboratory Medicine
2015;(14):2013-2014
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the value of clinical application of leukocyte classification alarm system (Q‐Flag ) for Sysmex XT‐1800i blood cell analyzer .Methods 394 blood samples with alarm system (Q‐Flag) and 190 ones without abnormal alarm infor‐mation detected by the Sysmex XT‐1800i blood cell analyzer were performed to observe the quantity and morphology of blood cells by manual differentiation ,and the results were compared between them .Results The alarm system of Sysmex XT‐1800i blood cell analyzer in detecting cell morphologic abnormalities was 100 .0% for sensitivity ,62 .3% for specificity ,70 .8% for positive predic‐tive value and 100 .0% for negative predictive value .Based on thegold standardof manual differentiation ,no abnormal cells were observed in those blood samples without Q‐Flag alarm information and the coincidence rate was 100% .The coincidence rate of leu‐kocyte classification was from 0 .0% to 75 .0% for blood cell analyzer when the alarm system (Q‐Flag) was between 100U and 200U ,and that was from 66 .7% to 95 .6% when the alarm system (Q‐Flag) was between 200U and 300U .Conclusion The alarm system sensitivity of leukocyte classification alarm system (Q‐Flag) is high for Sysmex XT‐1800i blood cell analyzer ,and it is nec‐essary to manually differentiate the samples with abnormal Q‐Flag in order to provide accurate and reliable clinical diagnostic infor‐mation .
