某型号尿液分析仪计数脑脊液红细胞和白细胞的可行性分析

目的 评价UF-1000i尿液分析仪用于检测脑脊液红细胞和白细胞计数的可行性.方法 以UF-1000i尿液分析仪对396例脑脊液标本进行细胞计数,并与手工计数结果进行比对.采用Spearman法和Bland-Altman法分析两种检测方法之间是否具有可比性.结果 两种方法检测结果之间白细胞和红细胞计数的Spearman相关系数(r2)分别为0.96和0.99(P均小于0.01).Bland-Altman分析发现,当脑脊液细胞计数越低,两种方法的一致性越好.结论 UF-1000i尿液分析仪对脑脊液细胞计数与手工计数法之间具有较高的一致性,可以用于脑脊液细胞计数,尤其是当脑脊液细胞计数较低时.     

自动分析仪在脑脊液和胸腹水细胞计数中的应用研究

目的分析比较UF-1000i全自动尿沉渣分析仪和XE-2100全自动血液分析仪在脑脊液和胸腹水细胞计数中的应用。方法随机取自住院和门诊患者送检脑脊液和胸腹水标本共143例,同时采用UF-1000i尿沉渣分析仪和XE-2100血液分析仪检测红细胞和白细胞数,以手工镜检法为标准进行比较,并作统计学分析。结果 UF-1000i尿沉渣分析仪对标本红细胞和白细胞数检测结果与镜检法相比显著相关（r2分别为0.993和0.989,P〈0.01）,差异无统计学意义（P〉0.05）。XE-2100血液分析仪对标本白细胞数检测结果与镜检法相比显著相关（r2=0.969,P〈0.01）,差异无统计学意义（P〉0.05）。结论使用UF-1000i尿沉渣分析仪检测脑脊液和胸腹水中红、白细胞数均具有可行性;XE-2100血液分析仪可用于检测脑脊液和胸腹水标本白细胞数,但不适宜检测红细胞数。     

UF-100i全自动尿有形成份分析仪在脑脊液细胞分析中的应用

目的 探讨UF-100i全自动尿有形成份分析仪在脑脊液细胞分析中的应用.方法 无菌采集脑脊液后,用UF-100i全自动尿有形成份分析仪对标本进行分析及传统手工方法分别计数脑脊液细胞,对计数结果进行统计学分析.结果 UF-100全自动尿有形成份分析仪检测红细胞、白细胞与显微镜目测法计数经配对t检验,无显著差异.结论 全自动尿有形成份分析仪计数脑脊液中的细胞快速、结果准确且重复性好,适合临床常规检测脑脊液标本.     

全自动尿沉渣分析仪在脑脊液细胞计数中的应用

目的探讨UF-1000i全自动尿沉渣分析仪在脑脊液常规细胞计数中的应用价值。方法无菌条件下收集本院住院患者163例脑脊液常规标本,同时用UF-1000i全自动尿沉渣分析仪和改良牛鲍计数板进行白细胞和红细胞计数,并对这两种方法的检测结果进行统计学分析。结果 UF-1000i全自动尿沉渣分析仪和改良牛鲍计数板两种方法结果比较:脑脊液红细胞计数(t=0.752,P=0.457)和白细胞计数(t=1.616,P=0.115)差异均无统计学意义。结论 UF-1000i全自动尿沉渣分析仪用于脑脊液细胞计数,具有快速、准确、重复性好等优势。     

UF-1000i尿沉渣自动分析仪与显微镜检查结果比较及复检规则的建立

目的探讨UF-1000i尿沉渣自动分析仪与显微镜检查尿中主要有形成分(红细胞、白细胞、上皮细胞、管型和类酵母菌)结果之间的差异,并制定合理的复检规则。方法 1598例新鲜中段尿先后用UF-1000i和BW-500进行尿沉渣分析和尿干化学测试,同时对每一份标本进行显微镜检查。用配对χ2检验对2种结果进行比较和统计学分析。结果红细胞、管型、类酵母菌的结果 ,2种方法的差异具有统计学意义(P<0.05),而白细胞、上皮细胞的结果 ,2种方法的差异无统计学意义(P>0.05)。经UF-1000i和BW-500检测结果均正常和经二者测试结果均异常(异常项目相匹配)的标本,UF-1000i检测和显微镜检查结果之间的差异无统计学意义(P>0.05),而UF-1000i和BW-500二者结果不一致者,红细胞、白细胞和管型3个项目的显微镜检查和UF-1000i检测结果之间的差异具有统计学意义(P<0.05)。结论与显微镜检查相比,UF-1000i检测尿沉渣结果假阳性较高,且红细胞存在一定的假阴性,只能作为一种筛查工具。将尿沉渣自动分析仪、尿干化学分析和显微镜复检三者联合,可确保结果的可靠性,并提高工作效率。     

尿沉渣分析仪检测尿液中红细胞及白细胞阳性结果原因及处理

目的 探讨UF-1000i尿沉渣分析仪检测尿液中红细胞及白细胞假阳性结果的原因,并寻找解决方案.方法 选取河北省廊坊市妇幼保健中心住院及门诊患者新鲜留取的尿标本5000例,经UF-1000i尿沉渣分析仪检测后,对红细胞和/或白细胞阳性的尿标本进行离心显微镜检测,以显微镜检测结果作为金标准,对引起UF-1000i尿沉渣分...     

UF-1000i尿沉渣分析仪检测白细胞及小圆上皮细胞假性升高的主要原因分析

目的探讨使用UF-1000i尿沉渣分析仪检测白细胞及小圆上皮细胞假性升高的主要原因。方法随机收集门诊尿液标本,分别用UF-1000i尿沉渣分析仪和显微镜进行检测,对2种方法检测结果进行统计学分析,分析导致UF-1000i尿沉渣分析仪检测白细胞及小圆细胞假性升高的影响因素。结果 UF-1000i尿沉渣分析仪检测白细胞的假阳性率为12.58%,导致假阳性的因素主要包括小圆上皮细胞(69.6%)、细菌(12.8%)、扁平上皮细胞(8.0%)和脂肪滴(6.4%);检测小圆上皮细胞的假阳性率为4.6%,导致假阳性的因素主要包括白细胞(67.9%)、脂肪滴(15.5%)和滴虫(11.9%)。结论当尿液病理成分增加时,多种因素可以影响UF-1000i尿沉渣分析仪对白细胞和小圆上皮细胞的检测结果,因此应用UF-1000i尿沉渣分析仪检测只能作为初步筛查方法,显微镜镜检仍然是尿沉渣检查的金标准。     

自动化尿液分析仪与显微镜检测尿液有形成分的对比分析

目的：通过分析自动化尿液分析仪与显微镜检测尿液有形成分结果的差异,寻找尿液有形成分显微镜筛选的方法。方法选取530份门诊和住院患者的尿液标本,分别采用 AX-4280尿干化仪(以下简称“AX-4280”)、UF-1000i 尿沉渣仪(以下简称“UF-1000i”)及计数板对尿液有形成分进行检测并进行比较。结果172份2种仪器法检测均为阴性,UF-1000i 检测红细胞、白细胞、管型与镜检结果差异无统计学意义(P >0.05);UF-1000i 检测红细胞、白细胞、管型为阴性而 AX-4280检测红细胞、白细胞、管型为阳性时,UF-1000i 与镜检结果差异有统计学意义(P <0.05);AX-4280检测红细胞、白细胞、管型为阴性而 UF-1000i 检测红细胞、白细胞、管型为阳性时,UF-1000i 与镜检结果差异有统计学意义(P <0.05)。结论AX-4280和 UF-1000i 尿液分析仪检测结果不相符时,需按照相应的显微镜筛选方法进行镜检,保证结果的可靠。     

Sysmex UF-1000i全自动尿沉渣分析仪的性能分析及临床应用

目的探讨Sysmex UF-1000i全自动尿沉渣分析仪的临床应用情况。方法分别采用UF-1000i尿沉渣分析仪和显微镜检查法对2 000例临床标本进行检测,对比2种方法的结果,并分析UF-1000i尿沉渣分析仪产生假阳性的原因。结果检测白细胞（WBC）,红细胞（RBC）,管型和小圆上皮细胞的敏感性分别为99.2%,99.3%,94.7%和95.1%;检测上述成分的假阳性率分别为5.8%、6.1%、10.4%和4.6%;粘液丝、结晶、细菌、酵母菌、小圆上皮、脂肪滴和卵磷脂小体可能影响到UF-1000i对尿有形成分的检测。结论 Sysmex UF-1000i可以有效的检测尿液中的有形成分,当尿液中上述干扰成分呈阳性或增多时,显微镜镜检是十分重要的。     

Sysmex UF-1000i全自动尿沉渣分析仪的性能分析及临床应用

目的探讨Sysmex UF-1000i全自动尿沉渣分析仪的临床应用情况。方法分别采用UF-1000i尿沉渣分析仪和显微镜检查法对2 000例临床标本进行检测,对比2种方法的结果,并分析UF-1000i尿沉渣分析仪产生假阳性的原因。结果检测白细胞(WBC),红细胞(RBC),管型和小圆上皮细胞的敏感性分别为99.2%,99.3%,94.7%和95.1%;检测上述成分的假阳性率分别为5.8%、6.1%、10.4%和4.6%;粘液丝、结晶、细菌、酵母菌、小圆上皮、脂肪滴和卵磷脂小体可能影响到UF-1000i对尿有形成分的检测。结论 Sysmex UF-1000i可以有效的检测尿液中的有形成分,当尿液中上述干扰成分呈阳性或增多时,显微镜镜检是十分重要的。     

Evaluation of Sysmex UF-1000i for use in cerebrospinal fluid analysis

BACKGROUND: Caution is of paramount importance in the interpretation of flow cytometric white blood cell counts in specimens with a high lymphocyte percentage as it is in the interpretation of bacterial counts in hemorrhagic and ventricular drainage CSF specimens. Recently, flow cytometry using a semiconductor laser along with forward and sideward scatter detection and also a dedicated bacterial channel has been developed (Sysmex UF-1000i). We explored the possible applications of this novel approach in the differential diagnosis of meningitis. METHODS: Flow cytometry, microscopy and biochemical data of 161 CSF samples were analyzed. Microbiological analysis was performed in 53 suspected cases of meningitis. RESULTS: Good agreement for leukocytes was obtained between UF-1000i (rho=0.614) and UF-100 (rho=0.582) and microscopy and between both flow cytometers (rho=0.734). Lymphocytes were correctly classified as WBC by UF-1000i. Bacterial count on UF-1000i showed to be reliable in hemorrhagic samples and in samples collected by ventricular drainage for which interference by blood platelets and cell debris forms a known caveat on UF-100. Bacterial background signal in sterile CSF samples was absent on UF-1000i. One case of Cryptococcus neoformans meningitis, missed by UF-100 was properly detected by UF-1000i. CONCLUSION: Sysmex UF-1000i CSF flow cytometer offers the clinician an improved aid in directing the differential diagnosis of meningitis towards viral, bacterial or fungal causes.     

2种尿沉渣分析仪检测红、白细胞的比较与评价

目的评价Cobio XS和Sysmex UF-1000i2种尿沉渣分析仪检测红白细胞的可靠性。方法选取红细胞和白细胞在高、中、低3个不同浓度水平的尿液标本在Cobio XS和Sysmex UF-1000i尿沉渣分析仪检测,测定2台仪器的重复性。将新鲜血标本稀释戍不同的浓度,测定2台仪器的稀释线性。收集住院患者尿液标本176份,以FAST-READ102沉渣计数板结果为标准,统计2种仪器的假阳性率,假阴性率。结果Cobio XS尿沉渣分析仪经人工校正后高、中、低值3水平的白细胞重复性变异系数为5．53％、6．29％、4．21％,红细胞变异系数为3．47％、4．98％、3．32％。Sysmex UF－1000i尿沉渣分析仪白细胞的重复性变异系数为2．74％、2．31％、2．90％,红细胞变异系数为1．75％、1．26％、1．39％。Sysmex UF－1000i尿沉渣分析仪红细胞在7～10210个／μL线性范围内的相关系数为0．9999,Cobio XS尿沉渣分析仪红细胞在4～5300个／μL线性范围内的相关系数为0．9993。Sysmex UF-1000i尿沉渣分析仪红细胞白细胞的假阳性率分别为43．8％和20．5％,Cobio XS尿沉渣分析仪分别为3．4％和11．4％。Sysmex UF-1000i尿沉渣分析仪红细胞白细胞的假阴性率分别为0．6％和0．6％,Cobio XS尿沉渣分析仪分别为1．7％和1．7％。结论Cobio XS和Sysmex UF-1000i尿沉渣分析仪均有良好的稀释线性。Sysmex UF-1000i尿沉渣分析仪的重复性较Cobio XS尿沉渣分析仪好,Sysmex UF-1000i尿沉渣分析仪红细胞白细胞的假阳性率明显高于Cobio XS尿沉渣分析仪,假阴性率稍低于Cohio XS尿沉渣分析仪。     

Roche Cobas 6500全自动尿液分析仪与其他系统的性能比较及效率评估

目的观察罗氏Roche Cobas 6500全自动尿液分析流水线与Arkray AX-4030、Urisys 2400、Sysmex UF-1000i尿液干化学、尿液有形成分检测结果之间的可比性。方法分别对Cobas u601与Urisys 2400尿液干化学检测性能,Cobas u601与Arkray AX-4030、Urisys 2400抗维生素C的干扰能力评估;比较Cobas u701与KOVA人工镜检计数在尿液有形成分检测差异,比较Cobas u701和Sysmex UF-1000i检测透明管型(Hya)、尿细菌计数(Bac)、病理管型(Pat)及结晶(Cry)的结果差异;比较Cobas 6500系统与Arkray AX-4030、Sysmex UF-1000i联合检测时的周转时间(TAT)差异。结果 Cobas u601与Urisys 2400尿液干化学9个参数检测结果的比对符合率均超过90%;Cobas 6500携带污染率为0%,未发现携带污染且未受到维生素C的干扰。在尿液有形成分检测中,Cobas 6500与镜检标准对照,阴阳性符合率均较高。结论 Cobas u601、Cobas u701与其他仪器检测结果的符合率较高,在检测重复性、携带污染率、抗维生素C干扰方面较好,Cobas 6500尿液分析仪能提高检验科日常TAT。     

菌尿对两种全自动尿沉渣分析仪检测尿红细胞的影响

目的探讨不同菌种、不同浓度细菌对Sysmex UF-1000i和IRISIQ-200全自动尿沉渣分析仪检测尿红细胞的影响,比较两种全自动尿沉渣分析仪检测尿红细胞时的抗细菌干扰能力。方法不同浓度的红细胞尿液加入不同菌种、不同浓度的细菌后分别用Sysmex UF-1000i和IRISIQ-200进行检测,比较加入细菌前后检测结果的差异。结果铜绿假单胞菌、金黄色葡萄球菌和大肠埃希菌对Sysmex UF-1000i和IRISIQ-200检测尿中红细胞没有显著影响,白色念珠菌和热带念珠菌可干扰Sysmex UF-1000i和IRISIQ-200对尿中红细胞的检测,但两种仪器受干扰程度有差异。结论 Sysmex UF-1000i和IRISIQ-200对尿红细胞检测在一定程度上可受到真菌的影响,结果报告应结合干化学检测和手工显微镜检查。     

Automated flow cytometric analysis of cerebrospinal fluid

BACKGROUND: Recently, the UF-100 (Sysmex Corporation) flow cytometer was developed to automate urinalysis. We evaluated the use of flow cytometry in the analysis of cerebrospinal fluid (CSF). METHODS: UF-100 data were correlated with microscopy and biochemical data for 256 CSF samples. Microbiological analysis was performed in 144 suspected cases of meningitis. RESULTS: Good agreement was obtained between UF-100 and microscopy data for erythrocytes (r = 0.919) and leukocytes (r = 0.886). In some cases, however, incorrect classification of lymphocytes by the UF-100 led to underestimation of the leukocyte count. UF-100 bacterial count positively correlated (P < 0.001) with UF-100 leukocyte count (r = 0.666), CSF total protein (r = 0.754), and CSF lactate concentrations (r = 0.641), and negatively correlated with CSF glucose concentration (r = -0.405; P < 0.001). UF-100 bacterial counts were unreliable in hemorrhagic samples and in samples collected by ventricular drainage where interference by blood platelets and cell debris was observed. Another major problem was the UF-100 "bacterial" background signal in sterile CSF samples. Cryptococcus neoformans yeast cells and cholesterol crystals in craniopharyngioma were detected by the flow cytometer. CONCLUSIONS: Flow cytometry of CSF with the UF-100 offers a rapid and reliable leukocytes and erythrocyte count. Additional settings offered by the instrument may be useful in the diagnosis of neurological disorders.     

Sysmex UF-1000i尿流式分析仪检测住院患者尿标本类酵母菌的临床评价

目的评价Sysmex UF-1000i尿流式分析仪检测尿标本类酵母菌的分析性能。方法应用尿流式分析仪检测我院住院患者尿标本,对仪器检测类酵母菌阳性尿标本进行镜检、培养鉴定;同时随机选择同期仪器检测阴性标本作对照。结合临床,判断患者尿路类酵母菌定植或感染。结果 2010年10月-2010年12月间共检测6019份尿标本,尿流式分析仪检测类酵母菌阳性127份,经培养证实82份为真阳性。同期仪器检测阴性标本121份中有12份培养阳性。以培养作为金标准,尿流式分析仪分析尿中类酵母菌试验敏感性为87.23%、特异性为70.78%、准确度为77.02%、阳性预测值为64.57%,阴性预测值为90.08%。菌种前三位的是以光滑念珠菌(43.40%)、白念珠菌(21.69%)、热带念珠菌(14.15%)。阿萨希毛孢子菌也存在一定比例(5.66%)。尿中类酵母菌真阳性患者多数患有多种基础疾病,以2型糖尿病(25.61%)、慢性泌尿系统疾病(18.29%)和颅脑脊髓损伤(17.07%)为主;实施的医疗措施以抗细菌药物(52.44%)、留置导尿管(35.37%)多见(P<0.05)。尿流式分析仪检测阴性而培养阳性12例患者均为尿路念珠菌定植。尿流式分析仪检测阳性并且培养阳性82例患者中,69例(84.15%)为类酵母菌尿路定植;13例(15.85%)为尿路感染,其中1(1.22%)例发展为热带念珠菌血症。结论 Sysmex UF-1000i尿流式分析仪对尿标本类酵母菌有较强的筛查价值。实验室应对仪器类酵母菌检测阳性标本进行镜检后确认。临床医师应对类酵母菌检测阳性患者结合其临床表现,采取不同的治疗措施。     

Performance of automated urine analyzers using flow cytometric and digital image-based technology in routine urinalysis

Abstract

The purpose of this study was to evaluate the analytical performances of Sysmex UF-5000 and Dirui FUS-200 and to compare the results with manual microscopy and between each other.

Two hundred fifty urine samples were analyzed for evaluation. Mid-stream specimens were studied sequentially using Dirui FUS-200 and Sysmex UF-5000, and also with manual microscopy within one hour. The physical and chemical components of urinalysis, and sediment results were investigated.

The precision results of the FUS-200 and UF-5000 for WBCs, RBCs, and ECs were acceptable. The both analyzers demonstrated good linearity (r?>?0.97), with no carry-over. The comparisons of FUS-200 and UF-5000 with manual microscopy for RBCs, WBCs, and ECs on 250 samples exhibited good agreement with little bias (R?>?0.780). Only, the moderate agreements were obtained for calcium oxalate for both analyzers (R?=?0.512, and 0.648, respectively). The sensitivities of the FUS-200 and UF-5000 were 75.8% and 86.8%, with specificities of 92.3% and 87.8% for WBCs, for RBCs the sensitivities were 91.1%, and 84.4% with specificities of 82.2%, and 89.6% for both analyzers. Kappa values of the UF-5000 were higher than FUS-200 for WBCs, RBCs, ECs, and calcium oxalate.

The FUS-200 and UF-5000 urine analyzers, are both accurate, very precise systems and can be safely used in clinical laboratories. However, due to the technological characteristics of the UF-5000 analyzer, its positive impacts on the morphologic recognition and enumeration of RBCs and WBCs should be taken into account, particularly in university hospital laboratories with high patient volumes.     

Urine particles analysis: Performance evaluation of Sysmex UF-1000i and comparison among urine flow cytometer,dipstick, and visual microscopic examination

Abstract

Introduction. Our objective was to evaluate a newly invented urine flow cytometer, and select an optimal strategy for urinalysis in clinical practice. Methods. The performance of UF-1000i was evaluated in both control material and patient samples. A total of 1631 specimens were collected and analysed by visual microscopy examination (VME), UF-1000i flow cytometer (Sysmex Medical Electronics Co, Kobe, Japan) and an automated dipstick reflectometer Clinitek Atlas (Bayer Corp, Elkhart, USA). Results. UF-1000i showed good imprecision performance for the main parameters in urine particles with CV values less than 20%. The results from UF-1000i correlated well with VME for erythrocytes (r = 0.96), leukocytes (r = 0.98), and epithelial cell (r = 0.84). The area under the receiver operating curve (AUC) was 0.879, 0.903, 0.783, and 0.817 respectively for erythrocytes, leukocytes, bacteria and CAST in UF-1000i. While in Clinitek Atlas, the AUC was 0.848, 0.803, 0.761, and 0.754 respectively. Sensitivity of combination of the two methods for screening remained at 98% as compared to VME alone, while reducing the visual review rate down to 40%. Conclusion. UF-1000i is capable of reproducible measurement of urine particles in the clinically relevant range and shows its advantage over Atlas. Combination of the two methods is an optimal strategy for urine sample screening.