IQ-200全自动尿沉渣分析仪管型检测评价

目的 评价IQ-200全自动尿沉渣分析仪管型检测的准确性.方法 选择200例干化学法尿蛋白 及以上的住院患者晨尿标本,同时采用IQ-200全自动尿沉渣分析仪和离心沉淀显微镜镜检法检查管型.结果 200例晨尿标本中IQ-200全自动尿沉渣分析仪提示存在管型的为68例,经人工修饰后为31例;显微镜检查阳性为28例.结论 IQ-200全自动尿沉渣分析仪管型检测假阳性率较高,人工修饰可显著提高其准确性.     

尿液有形成分三种检测方法的对比分析

目的探讨UF-100全自动尿沉渣流式细胞仪、尿沉渣定量计数板法、Nikon E-200相差显微镜检查对尿液有形成分检测的价值.方法留取100份江苏大学附属医院住院病人UF-100全自动尿沉渣阳性的标本,同时用三种方法进行检测,比较其结果.结果UF-100全自动尿沉渣流式细胞仪与尿沉渣定量计数板法比较在检测红细胞、白细胞和管型方面均有显著性差异.UF-100全自动尿沉渣流式细胞分析仪与Nikon E-200相差显微镜对小红细胞的鉴别无差异.结论UF-100全自动尿沉渣流式细胞分析仪灵敏度高,但有一定的假阳性,对于UF-100全自动尿沉渣流式细胞分析仪阳性标本应进一步用相差显微镜检查.     

IQ-200全自动尿沉渣分析仪在尿液分析中应用研究

目的探讨IQ-200全自动尿沉渣分析仪与干化学分析结合用于尿液常规分析的临床应用价值。方法随机选择400例住院患者尿标本,同时用美国IR IS公司的IQ-200全自动尿沉渣分析仪,MED ITRON公司的Mu ltiscan-720干化学分析仪及显微镜镜检分析多个参数指标。结果红细胞和白细胞检测在3种方法中符合率很高,IQ-200与镜检比较红细胞符合率89.3%,k值0.837;白细胞符合率90.5%,k值0.849。脓细胞与管型一致性较差。结论IQ-200全自动尿沉渣分析和Mu ltiscan-720干化学分析联合用于尿液分析可提高检测结果的精确度和准确度,提高检出效率。     

UF-50全自动尿沉渣分析仪与镜下检测结果对比分析

目的 探讨UF-50全自动尿沉渣分析仪与显微镜下检查尿中红细胞、白细胞、管型的方法及其影响因素.方法 用UF-50全自动尿沉渣分析仪和离心尿标本显微镜下分别对2 658例尿液标本进行检测,并对结果进行比较.结果 两种方法检测红细胞总的符合率为96.6%,白细胞为98.8%,管型为90.7%.两种方法对红细胞、白细胞、管型检测的阳性符合率分别为82.4%、94.4和40.0%.UF-50法对红细胞、白细胞、管型的假阳性率分别为13.8%、4.3%和59.8%.结论 虽然全自动尿沉渣分析仪法快速,简单,重复性好且不受主观因素影响.但仍然不能取代尿沉渣镜检,特别是对阳性尿液标本应结合显微镜检查,以降低假阳性率,提高检测结果的准确性.     

浅析UF-1000i全自动尿液有形成分分析仪管型报告与镜检结果的差异

目的 探讨UF-1000i全自动尿液有形成分分析仪和显微镜镜检两种方法检测尿中管型结果差异的原因.方法 采用Sysmex UF-1000i全自动尿液有形成分分析仪对200份新鲜晨尿标本进行尿沉渣分析,并同时对每一标本进行显微镜镜检,采用t、χ2检验对两种方法检测结果进行统计学分析.结果 200份标本中UF-1000i全自动尿液有形成分分析仪检出阳性93例,显微镜镜检检出阳性62例,假阳性率为28.26%,二者检测结果比较,差异有统计学意义(P<0.05).两种方法联合可将检测灵敏度提高至96.77%(P<0.05).结论 UF-1000i全自动尿液有形成分分析仪检测尿液管型时干扰因素较多,存在一定的假阳性结果.临床工作中应将两种方法结合起来,以提高检出率和准确性.     

IQ-200全自动尿沉渣分析仪在尿液分析中应用研究

目的探讨IQ-200全自动尿沉渣分析仪与干化学分析结合用于尿液常规分析的临床应用价值。方法随机选择400例住院患者尿标本，同时用美国IRIS公司的IQ-200全自动尿沉渣分析仪，MEDITRON公司的Muhiscan-720干化学分析仪及显微镜镜检分析多个参数指标。结果红细胞和白细胞检测在3种方法中符合率很高，IQ-200与镜检比较红细胞符合率89．3％，k值0．837；白细胞符合率90．5％，k值0．849。脓细胞与管型一致性较差。结论IQ-200全自动尿沉渣分析和Multiscan-720干化学分析联合用于尿液分析可提高检测结果的精确度和准确度，提高检出效率。     

UF-500i与IQ200尿沉渣分析仪检测管型的比较和评价

目的比较UF-500i与IQ200尿沉渣分析仪在检测管型中的敏感度、特异度和影响因素。方法采用UF-500i、IQ200尿沉渣分析仪和离心沉淀显微镜法分别检测门诊肾病患者晨尿标本,以人工镜检法作为标准对两种仪器敏感度、特异度进行分析。结果480份晨尿标本中,UF-500i尿沉渣分析仪敏感度为97．1％（68／70）,特异度为76．6％（314／410）;IQ200尿沉渣分析仪人工修饰前后敏感度分别为91．4％、100％（64／70,70／70）,特异度为70．5％／98．3％（289／410,403／410）。结论UF-500i与IQ200尿沉渣分析仪具有较高的管型检测灵敏度,但假阳性率高,均需人工复核以提高准确性。     

尿液有形成分三种检测方法的对比分析

目的探讨UF-100全自动尿沉渣流式细胞仪、尿沉渣定量计数板法、Nikon E-200相差显微镜检查对尿液有形成分检测的价值。方法留取100份江苏大学附属医院住院病人UF-100全自动尿沉渣阳性的标本，同时用三种方法进行检测。比较其结果。结果UF-100全自动尿沉渣流式细胞仪与尿沉渣定量计数板法比较在检测红细胞、白细胞和管型方面均有显著性差异。UF-100全自动尿沉渣流式细胞分析仪与Nikon E-200相差显微镜对小红细胞的鉴别无差异。结论UF-100全自动尿沉渣流式细胞分析仪灵敏度高，但有一定的假阳性，对于UF-100全自动尿沉渣流式细胞分析仪阳性标本应进一步用相差显微镜检查。     

自动尿沉渣仪分析法与显微镜法判断血尿来源的准确性比较

目的比较自动尿沉渣分析仪与显微镜法判断患者血尿来源的准确性。方法选取确诊的血尿患者160例,其中肾小球性血尿84例,非肾小球性血尿76例。留取其新鲜尿液标本,分别用自动尿沉渣分析法和显微镜法两种方法检测患者的尿液标本的红细胞形态,判断其血尿的来源,比较两种方法的灵敏度和特异度。结果自动尿沉渣分析法检测血尿来源灵敏度为94.1%,特异度为85.5%;显微镜法检测灵敏度为89.3%,特异度为69.7%。两种方法比较差异有统计学意义(χ2=8.43,P<0.05),认为IQ-200自动尿沉渣分析法检测患者血尿来源能力优于显微镜法。结论自动尿沉渣分析法相比于显微镜法,判断患者血尿来源的灵敏度和特异度均较高,且准确性较显微镜法好,值得临床推广使用。     

IQ200全自动尿沉渣分析仪、SysmaxUF-100尿液分析仪及人工显微镜镜检检测尿红、白细胞的分析研究

目的通过与SysmaxUF-100尿液分析仪及人工显微镜镜检的对比分析探讨IQ200全自动尿沉渣分析仪的性能、特点及应用价值。方法随机选取我院186例住院患者晨尿标本,分别用IQ-200全自动尿沉渣分析仪、SysmaxUF-100尿液分析仪及人工显微镜镜检进行检测,分析多个参数结果。结果（1）三种方法对尿液中红、白细胞的栓出率较一致。（2）三和方法对红细胞检测敏感度略高于白细胞的敏感度。（3）IQ-200全自动尿沉渣分析仪大大提高了对红细胞、白细胞检测的敏感度。结论IQ-200全自动尿沉渣分析仪敏感度较高,可实现尿液分析的自动化和标准化。     

Automated urinalysis: first experiences and a comparison between the Iris iQ200 urine microscopy system, the Sysmex UF-100 flow cytometer and manual microscopic particle counting.

BACKGROUND: Automated analysis of insoluble urine components can reduce the workload of conventional microscopic examination of urine sediment and is possibly helpful for standardization. We compared the diagnostic performance of two automated urine sediment analyzers and combined dipstick/automated urine analysis with that of the traditional dipstick/microscopy algorithm. METHODS: A total of 332 specimens were collected and analyzed for insoluble urine components by microscopy and automated analyzers, namely the Iris iQ200 (Iris Diagnostics) and the UF-100 flow cytometer (Sysmex). RESULTS: The coefficients of variation for day-to-day quality control of the iQ200 and UF-100 analyzers were 6.5% and 5.5%, respectively, for red blood cells. We reached accuracy ranging from 68% (bacteria) to 97% (yeast) for the iQ200 and from 42% (bacteria) to 93% (yeast) for the UF-100. The combination of dipstick and automated urine sediment analysis increased the sensitivity of screening to approximately 98%. CONCLUSIONS: We conclude that automated urine sediment analysis is sufficiently precise and improves the workflow in a routine laboratory. In addition, it allows sediment analysis of all urine samples and thereby helps to detect pathological samples that would have been missed in the conventional two-step procedure according to the European guidelines. Although it is not a substitute for microscopic sediment examination, it can, when combined with dipstick testing, reduce the number of specimens submitted to microscopy. Visual microscopy is still required for some samples, namely, dysmorphic erythrocytes, yeasts, Trichomonas, oval fat bodies, differentiation of casts and certain crystals.     

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。     

3种方法检测尿红细胞敏感度和准确性比较

目的比较UF-100尿沉渣全自动分析仪、尿液干化学分析仪与显微镜3种方法检测尿中红细胞（RBC）的敏感度和准确性。方法按要求收集2000份尿液样本,按仪器操作规程和尿沉渣显微镜检查规程,分别使用UF-100尿沉渣分析仪、GEB-600尿干化学分析仪和光学显微镜测定尿中RBC（每高倍视野大于3个为阳性样本）,采用SPSS10．0统计软件对所得数据进行统计学处理和配对资料卡方检验。结果3种方法检出RBC阳性率分别是：尿干化学法38．5％,UF-100全自动尿沉渣分析仪法33．0％,镜检法25．0％,尿干化学法及UF-100全自动尿沉渣分析仪法明显高于镜检法,三者间两两比较差异有统计学意义（P〈0．05）。结论3种方法联合检测可以提高尿中RBC检测的敏感度和准确性。     

三种方法联合检测尿液有形成分的比较和评价

探讨Sysmex UF-50尿流式细胞仪、干化学分析仪及尿沉渣镜检三种方法检测尿液中红细胞（RBC）、白细胞（WBC）和管型（CAST）的应用及影响因素。方法对640例病人的尿液分别用UF-50尿沉渣分析仪、干化学分析仪及尿沉渣镜检三种方法进行检测,并对结果进行比较。结果 UF-50检测RBC、WBC和CAST的阳性率分别为：29.38%、24.38%和8.75%。干化学法检测RBC和WBC的阳性率是33.90%和15.1%;尿沉渣镜检法检测RBC、WBC和CAST的阳性率分别为：19.22%、20.94%和2.03%。结论 UF-50尿流式细胞仪和干化学分析仪不能取代尿沉渣镜检,建议三种方法联合应用,减少检验误差,提高尿液分析质量。     

尿红细胞3种检测方法的结果差异及影响因素分析

目的探讨3种方法（镜检与尿干化学法及UF-50全自动尿沉渣分析仪）测定尿红细胞结果的吻合性及其影响因素。方法采用镜检法和尿干化学法及UF-50全自动尿沉渣分析仪对同一尿液标本进行尿液红细胞测定。结果3种方法检出红细胞阳性率分别是：UF-50全自动尿沉渣分析仪法为29．4％，尿干化学法为23．2％，镜检法为21．6％。UF-50全自动尿沉渣分析仪法明显高于尿干化学法和镜检法。3种方法阳性率不尽相同，差异有统计学意义。结论3种方法测定尿红细胞结果有一定的差异，联合检测和结合临床资料综合分析才能更好地确定尿液中红细胞的有无及其来源（肾性与非肾性）。     

Automation of urine sediment examination: a comparison of the Sysmex UF-100 automated flow cytometer with routine manual diagnosis (microscopy, test strips, and bacterial culture).

Urine specimens from 438 patients were examined with the UF-100 flow cytometer (Sysmex TOA Medical Electronics (Europe) GmbH, Hamburg, Germany) and by manual microscopy and test strips. One hundred and forty-two of these were also examined bacteriologically. The measurements with the UF-100 were performed on native urine without prior centrifugation. Intraassay imprecision, CV of 1.3% (547/microliter) to 8.5% (24/microliter) for erythrocytes and CV of 2.4% (218/microliter) to 5.6% (10/microliter) for leukocytes, are similar to those usual in clinical chemistry, and are very much better than those seen in manual microscopy of sediment. In routine use, overloading the flow cytometer by an excessive concentration of particles was observed in 9% of specimens. Such specimens should be checked visually. The UF-100 is distinctly more sensitive than manual microscopy for determining leukocytes, erythrocytes, epithelial cells and bacteria. Reference ranges were estimated from the results obtained. These enabled the UF-100 to replace routine manual diagnostic methods. Although the sensitivity is improved over manual microscopy of sediment, it is always necessary to perform parallel test strip examination when determining erythrocytes in order to detect haemolysis. In our opinion the Sysmex UF-100 is a suitable replacement for manual microscopy of urine sediment. In addition it offers an opportunity to improve standardization of basic urinalysis.     

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。     

Urine sediment examination: a comparison of automated urinalysis systems and manual microscopy

BACKGROUND: Several automated instruments examining urine sediment have been introduced. We compared the performance of Sysmex UF-100 and Iris iQ200 with manual microscopy in urine sediment testing. METHODS: Four hundred and thirty-six urine samples were collected. The urine sediments were examined by manual microscopy and these 2 automated urinalysis systems. RESULTS: The within-run CVs for urine samples ranged from 3.4% to 22.3% for the iQ200, 1.6% to 24.2% for the UF-100 and 12.5% to 43.9% for manual microscopy. Between-run CVs on quality-control samples ranged from 6.1% to 32.4% for the iQ200 and 3.5% to 24.7% for the UF-100. The agreement between methods was good for red blood cells and white blood cells counts based on r values of 0.935 to 0.968. However, for epithelial cells, the values measured by different systems were poorly correlated (r=0.888-0.922). The Bland-Altman plot indicated a trend towards the automated cell count being greater than the manual microscopy as the epithelial cell count increased. Casts were difficulty differentiated by 2 automated systems. CONCLUSIONS: These 2 automated urinalysis systems demonstrated good concordance with each other in urine sediment examination. The automated process could be used as a screening procedure but some manual microscopy was still necessary.     

Urine flow cytometry and detection of glomerular hematuria.

BACKGROUND: The UF-100 is a flow cytometer designed for automated cellular urinalysis. In this study, the usefulness of the UF-100 in laboratory investigation into the origin of hematuria was evaluated. METHODS: Results from flow cytometric urinalysis were used to classify urinary red blood cells (RBCs) according to glomerular and non-glomerular origin and the classification was compared to the patient's clinical diagnosis as the gold standard. In parallel, microscopic sediment analysis was carried out. RESULTS: A total of 206 urine samples from 129 patients were analyzed (127 from patients with glomerular hematuria, 79 from patients with non-glomerular hematuria). Of these, 136 samples (92 patients) showed overt hematuria (>or=20 RBC/microL). Urine flow cytometry correctly classified 61% (sediment analysis 69%) of urine samples with overt hematuria. If inconclusive results are excluded, the UF-100 correctly diagnosed 85% (sediment analysis 98%) of urine samples with overt hematuria. The UF-100 and microscopic sediment analysis both showed sensitivity of 99% for the detection of glomerular hematuria. The specificity of the UF-100 for the detection of glomerular bleeding was lower (42%) than the specificity of microscopic sediment analysis (93%). CONCLUSIONS: Owing to its low specificity, the UF-100 showed limited capacity to discriminate glomerular from non-glomerular causes of hematuria in a population with a high incidence of renal disease. Therefore, extensive microscopic urinalysis remains necessary to assess the origin of hematuria.     

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.