全自动血细胞分析仪与人工镜检新生儿白细胞分类的比对

目的以手工显微镜白细胞分类法为标准,评价Sysmex XS-1000i全自动血细胞分析仪检测新生儿白细胞计数和分类结果的准确性。方法用Sysmex XS-1000i全自动血细胞分析仪和人工显微镜分别检测83例新生儿血液标本做比对。结果仪器提示有核红细胞阳性率为84%,而镜检阳性率为72%,仪器与镜检分类相关分析中性粒细胞、淋巴细胞、嗜酸性粒细胞与镜检相关性较好,相关系数(r)分别为0.90、0.87、0.70,单核细胞和嗜碱性粒细胞数相关性较差,相关系数仅为0.29和0.18。结论 Sysmex XS-1000i全自动血细胞分析仪对新生儿白细胞的计数和分类的有一定误差,尤其是单核细胞和嗜碱性粒细胞分类相差很大,建议必须人工镜检进行白细胞分类并根据有核红细胞数对白细胞计数做相应的修正。     

Sysmex XE-5000血细胞分析仪白细胞分类性能评价

目的探讨Sysmex XE-5000血细胞分析仪白细胞分类结果和异常警句在临床应用的价值。方法对2,579例静脉血病例标本,用全自动血细胞分析仪分类出现异常警句提示与人工镜检白细胞分类结果分析。结果Sysmex XE-5000全自动血细胞分析仪对形态异常细胞提示系统具有很高灵敏度,其异常情况报警系统的灵敏度为100％,阴性预示值为100％,阳性预示值为81．59％,特异性为86．78％,假阳性率为21．71％。仪器无报警提示的标本分类与人工显微镜检分类比较,中性粒细胞、淋巴细胞、单核细胞、嗜酸性粒细胞、嗜碱性粒细胞相关系数（r）分别是0．9807,0．9557,0．9036,0．8500,0．7029。结论对于有异常的标本,仪器很难提供完全准确的分析结果,按照操作规程进行显微镜镜检,以免造成漏诊、误诊现象。     

血细胞分析仪白细胞分类功能评价

目的评价Sysmex XE-2100血细胞分析仪白细胞分类功能。方法仪器检测338例非白血病标本共4组,其中WBC减少组86例,WBC正常组127例,WBC增高组125例．嗜酸性粒细胞增高组39例;同时进行血涂片人工分类。结果仪器与人工镜检白细胞分类,在WBC正常、增高或减低各组,中性粒细胞和淋巴细胞两者相关性良好（r〉0．900）,而单核细胞与嗜碱性粒细胞两者相关性较差（r〈0．700）;嗜酸性粒细胞在WBC正常、增高及嗜酸性粒细胞增高组,两者有较好的相关性（r〉0．900）。在WBC正常、增高或减低各组,中性粒细胞和淋巴细胞镜检法明显高于仪器法（P均〈0．001）;而单核细胞与嗜酸性粒细胞则镜检法明显低于仪器法（P均〈0．001）。结论Sysmex XE-2100血细胞分析仪可准确分类中性粒细胞、淋巴细胞及嗜酸性粒细胞,并且可在嗜酸性粒细胞增高的标本中准确分类嗜酸性粒细胞。而单核细胞分类两者结果差异较大,且仪器对有异常细胞存在的标本又可能不分类,说明高档次的血细胞分析仪也仅可作为全血细胞分析的一种过筛手段,其异常细胞的检测能力仍然存在缺陷。     

Sysmex XE-2100全自动血细胞分析仪与显微镜目测法测定白细胞分类结果比较

目的探讨Sysmex XE-2100全自动血细胞分析仪白细胞分类结果与显微镜目测法两种结果的可比性,为现代化仪器的推广应用提供临床实验室依据.方法取一份标本,连续测定10次,观察其批内精密度;用质控物,连续测定23天,观察其批间精密度;将90例血标本的Sysmex XE-2100全自动血细胞分析仪检测结果与显微镜目测法结果进行相关性回归分析.结果Sysmex XE-2100血细胞分析仪白细胞分类的批内精密度和批间精密度均在允许范围内,仪器法白细胞分类结果与显微镜目测法结果之间亦具有良好的相关性,中性粒细胞、淋巴细胞、单核细胞、嗜酸性粒细胞和嗜碱性粒细胞相关系数(r)分别为0.9859,0.9775,0.8053,0.8695,0.5243(P＜0.01).结论Sysmex XE-2100全自动五分类血细胞分析仪是一种较为理想的血细胞分析仪,具有简便、快捷、精密、准确等优点,能满足临床应用要求,值得推广使用.     

Sysmex XE-2100血细胞分析仪白细胞分类计数的性能评价

目的 对Sysmex XE-2100血细胞分析仪白细胞分类计数进行性能评价.方法 从不精密度、可比性、临床诊断敏感性这三个方面对Sysmex XE-2100血细胞分析仪白细胞分类计数进行评价.结果 该仪器的批内、短期和长期不精密度分别在0.91％～15.53％之间.白细胞分类计数仪器法与人工显微镜法比较,中性粒细胞、淋巴细胞、单核细胞、嗜酸性粒细胞、嗜碱性粒细胞的相关系数(,)分别是0.956 4,0.941 8,0.700 7,0.931 3和0.811 1.200份临床病例类型与仪器白细胞分类结果比较,各类白细胞的临床符合率分别在5％～100％之间.结论 Sysmex XE-2100血细胞分析仪白细胞分类计数具有较高精密度及临床诊断敏感度,与人工显微镜分类有较好的相关性等特点,它可作为一种过筛手段进行初检.     

恶性肿瘤类白血病反应的中毒性中性粒细胞的MAXM血液分析仪分析

目的探讨恶性肿瘤伴类白血病反应患者的中毒中性粒细胞是否被MAXM血细胞分析仪误认为嗜碱性粒细胞。方法MAXM血细胞分析仪进行白细胞计数和分类;瑞氏染色镜检白细胞分类;过氧化物酶染色区分中性粒细胞和嗜碱性粒细胞;碱性磷酸酶染色区分类白血病反应。结果26例恶性肿瘤患者用MAXM血细胞分析仪进行白细胞计数为:(28.6±5.7)×109/L;分类为:中性粒细胞49.9%±10.6%,淋巴细胞15.2%±4.3%,单核细胞2.2%±1.2%,嗜酸性粒细胞0.4%±0.3%,嗜碱性粒细胞32.3%±10.2%。镜检分类为:中性粒细胞85.6%±11.8%,淋巴细胞12.9%±5.1%,单核细胞1.5%±1.4%,嗜酸性粒细胞0%,嗜碱性粒细胞0%,其中中毒中性粒细胞为36.5%±7.6%。过氧化物酶染色阳性率为:89.6%±12.3%。中性粒细胞碱性磷酸酶阳性率为83.1%±12.5%,积分395±63。结论MAXM血细胞分析仪把类白血病中毒中性粒细胞误认为嗜碱性粒细胞。     

Sysmex SF-3000血液细胞分析仪白细胞五分类结果应用与评价

目的探讨Sysmex SF-3000血液细胞分析仪白细胞五分类结果的精密度和准确度.方法对临床462例患者全血标本进行SF-3000血细胞分析仪白细胞五分类及对照目测分类.结果中性粒细胞两者相关系数(r)为0.96,嗜酸性粒细胞为0.86;嗜碱性粒细胞为0.89;淋巴细胞为0.82;而单核细胞为0.63.除单核细胞外,两种分类方法无显著性差异(P＞0.05),而单核细胞有极其显著性差异(P＜0.001).结论除单核细胞外,中性粒细胞、嗜酸性粒细胞、嗜碱性粒细胞用仪器分类的精密度与准确度相当于目测分类.     

CD3500血细胞分析仪异淋细胞结果可信性分析

CD3500全自动血细胞分析仪不但能将白细胞分为嗜中性粒细胞、淋巴细胞、单核细胞、嗜酸性粒细胞、嗜碱性粒细胞五类,还能提供其他四种分类及百分数,如:异常淋巴细胞%(VARLM)、胚细胞%(BLAST)、未成熟粒细胞%(IG)、带形核嗜中性粒细胞%(BAND).本文对仪器提供的异常淋巴细胞(以下简称异淋细胞)分类的百分数和传统的显微镜目测(以下简称镜检)分类百分数比较,结果分析如下.     

全自动血细胞分析仪白细胞分类功能评价

目的分析Sysmex XT-2000i全自动血细胞分析仪检测白细胞（WBC）异常结果与显微镜检查结果的一致性。方法对Sysmex XT-2000i全自动血细胞分析仪检测172例非白血病肿瘤患者标本共3组,其中WBC减少组57例,WBC正常组59例,WBC增高组56例;同时进行血涂片人工分类。结果仪器与人工镜检白细胞分类,在WBC正常、增高或减低各组,淋巴细胞、单核细胞、中性粒细胞和嗜酸性粒细胞二者相关性良好（r〉0.900）,而嗜碱性粒细胞二者相关性较差（r〈0.700）。在WBC正常、增高或减低各组,中性粒细胞和淋巴细胞镜检法明显高于仪器法（P〈0.01）;而单核细胞与嗜酸性粒细胞则镜检法明显低于仪器法（P〈0.01）。结论与镜检法作对照,血细胞分析仪仅可作为白细胞分类的一种过筛手段,其异常细胞的检测能力仍然存在缺陷。需要通过显微镜镜检来进行修正,以保证结果的正确性。     

SysmexXE-5000血液分析仪与人工显微镜镜检白细胞分类相关性研究

目的研究Sysmex XE-5000全自动血液分析仪与人工显微镜镜检白细胞分类的相关性。方法收集该院100份住院及体检者全血标本,采用SysmexXE-5000全自动血液分析仪对高、中、低浓度白细胞标本进行白细胞分类,计算仪器法的批内、批间精密度,并与人工显微镜镜检白细胞分类结果进行相关性分析。结果 SysmexXE-5000全自动血液分析仪白细胞分类批内及批间精密度均在允许范围内,且其白细胞分类结果与人工显微镜镜检结果具有良好的相关性,中性粒细胞、淋巴细胞、单核细胞、嗜酸粒细胞相关系数分别为0.978 2、0.909 5、0.827 0、0.868 6(P0.05),但对嗜碱粒细胞的检测结果相关性差(P0.05)。结论 SysmexXE-5000全自动血液分析仪进行白细胞分类具有快速、准确以及重复性好的优点,适用于批量血液标本白细胞分类计数的筛查,但对于仪器有报警提示的血液标本则需要结合人工显微镜镜检,才能提高白细胞分类的准确性。     

Evaluation of the XE-5000 for the automated analysis of blood cells in cerebrospinal fluid

ObjectivesCounting of cells in cerebrospinal fluid is an important clinical laboratory test and elevated white blood cell counts in cerebrospinal fluid are frequently seen in CNS disorders. Quantification of red blood cell concentrations in CSF may help to interpret certain diagnostic constellations and may result from subarachnoid haemorrhage, surgical procedures or contamination due to traumatic puncture. Table top analyser XE-5000 (Sysmex, Norderstedt, Germany) offers, beside its use as a haematology analyser, a protocol for the quantification of red and white blood cells in body fluids such as CSF including the differentiation between polymorphonuclear and mononuclear cells. A detection limit of 1 cell/mm³ would render this device suitable for automated CSF analysis.Design and methodsWhite blood cell counting was compared between Fuchs–Rosenthal counting chamber and XE-5000 in 273 routinely collected lumbar and ventricular CSF samples. Red blood cell counting was compared between UF-100 and XE-5000. Differentiation was performed on a slide stained after Pappenheim and compared to the differential count of the XE-5000.ResultsLinearity was established between 1 and 10,000 cells/mm³ for white blood cells and between 1000 and 1 ? 10³ particles/mm³ for red blood cells. Functional sensitivity was established at 20 cells/mm³ for white blood cell counting and at 1000 particles/mm³ (lowest reported concentration) for red blood cell counting. When comparing between microscopic and automatic white blood cell counts no statistically significant slope and offset were detected in lumbar CSF samples while a significant slope and offset were detected when comparing ventricular CSF samples. Most patients were classified correctly according to their WBC count (non-pathologic, mildly, moderately, and highly elevated) by both methods although more patients had pathologic white blood cell counts on XE-5000. A significant slope and offset were detected when comparing red blood cell counts between UF-100 and XE-5000.ConclusionsIn summary despite its high imprecision at low white blood cell counts (< 20 particles/mm³) most patients were classified correctly and therefore XE-5000 is suitable for automated quantification of white blood cells in cerebrospinal fluid in a defined diagnostic setting. This could significantly improve automation in the relatively time- and manual work-intensive field of cerebrospinal fluid diagnostics. However, careful review of plausibility of the results continues to be compulsory.     

Sysmex XE-5000自动血液分析仪的临床评价

目的 对Sysmex XE-5000全自动血细胞分析仪的主要性能进行评价.方法 对Sysmex XE-5000的精密度、线性范围、与镜检的相关性和交叉污染率进行测定,并与Sysmex XE-2100血细胞分析仪进行比较.同时,对微量血和体液模式进行了评估.结果 Sysmex XE-5000全自动血细胞分析仪精密度表现优异,重复性、稳定性好,线性范围宽,交叉污染率低.通过XE-5000分析,微量血与静脉血血细胞分析结果基本没有差异.体液模式脑脊液细胞计数、分类与人工镜检表现出良好的相关性.结论 Sysmex XE-5000全自动血细胞分析仪是一种较理想的血细胞分析仪.     

Diagnostic value of an automatic hematology analyzer in patients with hematologic disorders

The Sysmex SE-9000 is a newly designed automatic hematology analyzer that provides complete blood counts and white-cell differential counts. Few reports in the literature, however, discuss the sensitivity and specificity of this type of automatic analyzer, especially in patients with hematologic illnesses. This study compared differences between hematologist assessments and measurements made by the SE-9000 analyzer of differential counts, immature granulocytes, atypical lymphocytes, nucleated red cells, and platelet counts. Significant differences were found between manual and apparatus counting of neutrophils, lymphocytes, and monocytes but not of eosinophils and basophils. Atypical lymphocytes and nucleated red cell could not be counted accurately, and when platelet counts fell below 20 x 10(9)/L, accurate assessments were not possible. We conclude that not even the Sysmex SE-9000 can provide unflawed results and any suspicious blood report should be rechecked by an experienced hematologist.     

Automated white blood cell counts in cerebrospinal fluid using the body fluid mode on the platform Sysmex XE-5000

Abstract

Background. The Sysmex XE-5000 offers automated quantification of red blood cells and white blood cells (WBCs) in body fluids, with differentiation of polymorphonuclear cells (PMNs) and mononuclear cells (MNCs). Methods. We evaluated automated WBC counting in cerebrospinal fluid (CSF) using the body fluid mode on the Sysmex XE-5000, comparing it with flow cytometry as the reference method, and also with manual counting by microscopy. Experimental analysis for linearity and limit of detection was performed by diluting isolated WBCs in cell-free CSF. To study the ability to discriminate between PMNs and MNCs, samples were spiked using MNCs separated from peripheral blood. Comparison of WBC counts between a counting chamber and the XE-5000 was performed for 198 CSF samples. Results. In the experimental set-up, within-run (CV 19%) and between-day imprecision (CV 15.3%) in quantitating total number of WBC on XE-5000 was acceptable for WBC counts ≥ 25 × 10⁶/L. Compared with expected cell counts, mean bias was + 2.6% for flow cytometry, + 5.5% for XE-5000 and ? 73.2% for manual counting. Differentiation between PMNs and MNCs was in concordance with flow cytometry. In comparisons of clinical CSF samples, overall agreement between the XE-5000 and manual counting was observed in 81% of the samples, but mean difference in WBC differentiation was higher for PMN (51.1 × 10⁶/L) than for MNC (7.95 × 10⁶/L). Conclusion. Despite limited precision at low WBC counts, XE-5000 could be a favourable alternative to the labour-intensive, time-consuming and less reliable manual counting and cuts turnaround times in routine CSF-based diagnosis.     

Interlaboratory variation of leukocyte differential counts: results from the Finnish proficiency testing programme in haematological morphology, 1974-1977

The interlaboratory variation of leukocyte differential counts in the Finnish proficiency testing programme in haematological morphology is presented. During 1974-1977 altogether twenty-four different blood smears with neither leukocytosis nor abnormal leukocytes were examined by the participants. During this period 206 laboratories participated in the voluntary programme. The interlaboratory variation of leukocyte differential counts was analyzed for band neutrophils, segmented neutrophils, eosinophils, basophils, lymphocytes and monocytes. Except for band neutrophils and monocytes the observed variations were found to closely match the known random sampling variation which is inherent in the method for estimating the proportions of the various leukocytes of peripheral blood. It is suggested that the results point to variations in the definitions to differentiate band vs. segmented neutrophils and monocytes vs. lymphocytes. Interlaboratory proficiency testing is considered to offer an effective means to investigate the quality of morphologic analyses as practised on a day to day basis in the participating laboratories.     

XE-5000血液分析仪体液模式检测脑脊液细胞分析

目的探讨XE-5000血细胞分析仪体液模式（仪器法）在脑脊液细胞检测中的临床应用价值。方法分别应用仪器法和手工法对165例脑脊液标本进行白细胞（WBC）计数、分类及红细胞（RBC）计数的检测,并比较两种方法结果的差异;建立并验证仪器法脑脊液细胞检测的复检规则：分析仪器法对特殊病例的检测结果。结果当WBC〉10x10^6L时,仪器法WBC计数、分类检测结果与手工法之间差异无统计学意义抄0．05）;当RBC〉0．5x10^9L时,仪器法的RBC计数测定结果与手工法之间差异无统计学意义眇0．05）;制定出了合理、切实可行的仪器法复检规则。结论通过制定合理的复检规则,XE-5000血细胞分析仪体液模式可有效满足临床对脑脊液细胞自动化检测的需要。     

血液病患者血液中肺炎支原体和发酵支原体的检出

目的　探讨血液病患者血液中肺炎支原体和发酵支原体的分离检出。方法　分别对101例确诊为血液病患者和65名非血液病对照者的血液标本进行肺炎和发酵支原体分离培养和聚合酶链反应鉴定,阳性标本进一步经电镜确认。 结果　101例血液病患者血液标本中共计检出肺炎和发酵支原体17例（16.8%）,其中肺炎支原体9例（8.9%）,发酵支原体8例（7.9%）,体检对照组血液中未检出肺炎和发酵支原体（0.0%）,组间差异有统计学意义（IP/I0.01）。 结论　血液病患者血液中肺炎支原体和发酵支原体的检出显著高于非血液病对照组,确切机制有待进一步探讨。     

三分类血细胞分析仪的筛查与镜检标准的制定

目的：评价Coulter三分类血细胞分析仪对门、急诊患者的筛查效果；以及血涂片镜检标准的制定对三分类血细胞分析仪的补充作用。方法：对60例门、急诊患者的血液标本同时进行CoulterA^c．T diff^TM及Sysmex XE-2100血细胞分析仪全血细胞分析；对76例门、急诊患者的血液标本同时进行Coulter A^c．Tdiff^TM三分类及人工分类。结果：Coulter A^c．T diff^TM与Sysmex XE-2100血细胞分析仪全血细胞分析，包括WBC、RBC、Hb及Pit两者相关性较好（r〉0．90）；Coulter A^c．T diff^TM三分类与人工分类结果比较，中性粒细胞镜检法明显低于仪器法（P〈0．001），淋巴细胞镜检法明显高于仪器法（P〈0．001），中间细胞两种方法差异无显著性（P〉0．05）；中性粒细胞和淋巴细胞仪器法与镜检法相关性良好（r〉0．95），而中间细胞两者不相关（r〈0．1）。结论：使用三分类血细胞分析仪进行全血细胞分析包括WBC、RBC、Hb及Pit结果可信，可提高工作质量和效率；而三分类血细胞分析仪对白细胞分类的筛查作用有限，必须制定严格的显微镜复检标准，才能防止血液病患者的漏诊或误诊。     

Biological variation of the leukocyte differential count quantities.

The biological variation of the blood concentration and number fraction of the different kinds of leukocytes have been estimated, over a one-year period in a group of 19 women and 20 men, apparently healthy volunteers. All measurements have been performed with a Toa E-5000 haematological analyser. The medians of the within-subject biological coefficients of variation, separated by sex when significant differences exist, are the following for concentrations: 9.4% in men and 15.4% in women for the leukocytes, 16.9% in men and 26.9% in women for the neutrophils, 12.3% for the lymphocytes, 14.9 for the basophils+eosinophils+monocytes (as measured by Toa E-5000); and for number fraction are the following: 8.6% for neutrophils, 0% in men and 7.2% in women for lymphocytes, and 16.7 for basophils+eosinophils+monocytes (as measured by Toa E-5000). With these data the index of individuality, the critical difference for significant change detection and the desirable imprecision have been calculated.     

Automated blood count analysis by trimodal size distribution of leukocytes with the SYSMEX E-5000

The automated haematology analyser, SYSMEX E-5000, measures and computes quantitative haematological parameters, and determines the size distribution of blood cells and platelets. After partial lysis, the analyser classifies the leukocytes into 3 populations: small cells (lymphocytes), intermediate sized cells (basophils, eosinophils, monocytes) and large cells (neutrophils, including band cells). One thousand blood samples from inpatients and outpatients were analysed automatically in the SYSMEX as well as being submitted to microscopic blood smear differentiation, and the results were compared. The trimodal size distribution of the automated analysis revealed 1.8% false normal results. Ten cases of eosinophilia of between 6.6 and 12.5% remained undetected by the automated method, which also failed to detect 7 cases of left shift with normal leukocyte count, as well as a single sample containing 2% of myelocytes. Both diagnostic sensitivity and diagnostic specificity were high, i.e. 97.1% and 81.8%, respectively. The predictive values were also high for both pathological and normal results. Since certain changes in blood cell morphology are not detected by the SYSMEX, certain clinical indications still call for a microscopic blood smear examination. With due regard to these limitations, the apparatus yields reliable results and economizes considerably the routine laboratory work load. In the present study, 31% of the microscopic blood cell differential counts were saved by using the SYSMEX E-5000.