仪器分析法和手工涂片法白细胞分类结果比较

观 察外周血细胞分类变化对疾病的初诊和治疗有着极其重要的作用 ,最常用的方法是手工涂片法 ,直接在显微镜下观察细胞形态 ,直观易发现问题 ,但较费时。目前三分类血球分析仪在血标本检测中广泛使用 ,其检测白细胞分类的原理主要采用库尔特原理[1] 。仪器法的特点 :检测标本速度快 ,但分类较粗糙。本文选取 6 2例病人血标本分别用仪器法和手工法进行白细胞分类比较。1　资料与方法1.1　检测对象选出 6 2例血液标本 ,均为在本院治疗的病人。1.2　检测仪器美国雅培公司CD 16 0 0型自动血球分析仪 ,试剂为长沙华珊公司提供 ,日本OLYMPUS显…     

全自动血细胞分析仪体液模式与手工法对胸腹腔积液细胞计数及分类的结果比较

目的 与手工法对比,评价迈瑞BC-6900全自动血细胞分析仪体液模式对胸腹腔积液细胞计数及分类的准确性.方法 收集2017年7月至2018年3月某肿瘤专科医院患者胸腹腔积液标本112例.应用全自动血细胞分析仪体液模式(仪器法)与改良牛鲍计数板(手工法)进行红细胞、有核细胞计数及分类,观察两种方法的计数结果的相关性和偏差.结果 无论血性或非血性胸腹腔积液标本,红细胞(RBC-BF)手工法与仪器法计数均有较强的相关性(rs分别为0.989、0.973).与手工法比较,血性标本红细胞仪器法计数较非血性标本一致性好,偏差分别为-8.9％～27.6％、-27.6％～25.3％.有核细胞总数≤100×106/L时,有核细胞(TC-BF)、单个核细胞(MN)、多个核细胞(PMN)仪器法与手工法计数相关性(rs分别为0.704、0.792、0.761),低于计数>100×106/L区间内的相关性(rs分别为0.958、0.930、0.925);两个区间内三者仪器法与手工法计数的最大相对负偏差分别为-60％～-42.3％、-25.2％～-22.1％,最大正偏差分别为41.1％～54.5％、28.7％～29.7％.结论 迈瑞BC-6900全自动血细胞分析仪体液模式红细胞计数和在有核细胞数>100×106/L时的TC-BF、MN、P MN计数与手工法比较具有良好的一致性.     

二种血细胞分析仪白细胞分类的应用评价

九 十年代 ,三分类血细胞分析仪的使用 ,减轻了检验工作者的劳动强度 ,提高了检测效率。近年来 ,可以对血液细胞多种组分 (包括白细胞的五种组分 )进行分类的五分类血细胞分析仪 ,其操作更为简便 ,检测速度更快 ,使血细胞分析技术有了极大的提高。但其结果与手工法比较准确性怎样呢 ?本文作者将此二类血细胞分析仪白细胞分类结果与手工法进行比较 ,并作出评价。1　材料与方法1.1　仪器及试剂美国雅培CELL DNY 170 0型血细胞分析仪 ,试剂均由雅培公司生产 ;德国拜耳ADVIA 12 0型血细胞分析仪 ,试剂均由拜耳公司生产 ;OLYMPUS显微镜由…     

应用全自动血细胞分析仪应该重视血涂片镜检

目的 目的:应用全自动血细胞分析仪应该重视血涂片镜检.方法 采用SySmex XS 800 i全自动五分类血细胞分析仪检测,异常或未出结果 的标本进行人工瑞士染色后涂片镜检.结果 人工血涂片镜检要比血细胞分析仪更能准确地反映出病人血细胞形态的变化.结论 全自动血细胞分析仪虽然快速、准确,但也不能忽视血涂片镜检的重要作用.     

三分类血液分析仪白细胞分类无警示标本与目测显微镜分类结果的比较

本文随机抽取CELL-DYN1700（以下简称CD-1700）三分类血液分析仪白细胞分类无警示标本206例，用显微镜进行白细胞分类。仪器和目测显微镜分类法的结果用相关系数进行相关性分析。两种方法的相关系数分别为：中性粒细胞r=0．954，中间细胞r=0．170，淋巴细胞r=0．954。中性粒细胞和淋巴细胞的相关性非常显著，中间细胞相关性较低。结果表明在各项参数均正常的情况下CD-1700白细胞分类无警示的结果可作为筛选手段，但其性能不够完善，尚不能完全取代显微镜检查，在异常情况下仍须进行人工分类。     

三分类血液分析仪白细胞分类无警示标本与目测显微镜分类结果的比较

本文随机抽取CELL-DYN1700(以下简称CD-1700)三分类血液分析仪白细胞分类无警示标本206例,用显微镜进行白细胞分类.仪器和目测显微镜分类法的结果用相关系数进行相关性分析.两种方法的相关系数分别为:中性粒细胞r=0.954,中间细胞r=0.170,淋巴细胞r=0.954.中性粒细胞和淋巴细胞的相关性非常显著,中间细胞相关性较低.结果表明在各项参数均正常的情况下CD-1700白细胞分类无警示的结果可作为筛选手段,但其性能不够完善,尚不能完全取代显微镜检查,在异常情况下仍须进行人工分类.     

白细胞分类显微镜法与CD1600血细胞分析仪法的对比分析

目的 比较CD1600血细胞分析仪和人工显微镜油镜计数法对白细胞分类计数的差异情况.方法 EDTA-K2抗凝全血标本分别采用仪器法和手工法作白细胞分类计数.结果 仪器法和手工法白细胞分类计数结果当白细胞总数低于15×109/L结果无显著性差异(P＞0.05),但当白细胞总数超过15×109/L时,两者计数有差异.结论 仪器法方便、快捷、重复性好,白细胞总数低于15×109/L时可以代替显微镜油镜计数法,当白细胞数量超过15×109/L,或有不正常细胞出现及细胞分布异常时用显微镜目视计数法更准确.     

LH750血细胞分析仪检测妊娠期白细胞参数

目的探讨LH750血细胞分析仪检测妊娠期白细胞参数。方法采用LH750血细胞分析仪,检测100例健康妊娠期妇女和37例健康育龄妇女的白细胞总数（WBC）、中性粒细胞（NE）,淋巴细胞（LY）,单核细胞（MO）,嗜酸性粒细胞（EO）及嗜碱性粒细胞（BA）的百分比及绝对值等相关21项白细胞参数。结果妊娠组与正常对照组比较：NEC、NES、LYV、LYC、MOV和MOC与对照组均无明显差异,P〉0.05,无统计学意义。其余各白细胞参数与对照组有差异,P〈0.05,有统计学意义。结论妊娠者中性粒细胞（NE）增加并伴随VCS参数发生较大改变,应考虑其合并感染的可能性。     

17例有核红细胞存在对白细胞计数干扰的原因分析

日本希森美康最新一代全血细胞检测仪器,是XN系列全自动血细胞分析仪,在日常血细胞分析检验中被广泛应用。过往案例报道,XN系列全自动血细胞分析仪,能通过识别有核红细胞,达到自动纠正白细胞计数的目的,与显微镜手工镜检方法比较,结果无明显偏差,可信度及相关性较好。针对此情况,收集我院2021年1月至9月的17例患者的结果,发现当有核红细胞计数NRBC为25.3个/100WBC及NRBC>61.3个/100WBC,并伴有大量幼稚红细胞或白细胞碎片存在时,仪器自动纠正白细胞计数与显微镜手工镜检分类纠正白细胞计数比较,结果有明显偏差,两者之间存在不符。由此证明先进的全血细胞分析仪仍无法取代显微镜手工镜检法纠正白细胞的地位。因此,当大量有核红细胞存在时,仍需要手工纠正白细胞计数。     

临床样本分离白细胞在Sysmex XN血细胞分析仪性能验证中的应用

目的 制备高浓度白细胞样本验证Sysmex XN-1000(B3)血细胞分析仪检测白细胞的性能.方法 从30份临床抗凝样本中分离白细胞,按照国家卫生行业标准WS/T 406-2012文件的要求对Sysmex XN-1000(B3)血细胞分析仪检测白细胞的性能进行验证.结果 任意混合多份临床样本分离白细胞可获得高浓度白细胞样本;Sysmex XN-1000(B3)血细胞分析仪检测白细胞的本底计数为0,批内精密度的CV为1.39％,低、中浓度水平质控品的日间精密度的CV分别为2.0％和1.9％,正确度偏倚为1.46％,在0～ 145.63×109/L检测范围内呈线性关系,携带污染率为0.06％,准确度的相对偏差范围为0.44％～ 5.74％.结果 任意混合多份临床样本,通过分离、富集可获得高浓度白细胞样本,用于Sysmex XN-1000(B3)血细胞分析仪检测白细胞的性能验证.     

Statistical comparison of the results of the blood cells count obtained with a Micros 60 ABX analyzer using the genuine reagents and generics reagents kits

Using the haematology automated analyser Micros 60 (Horiba ABX, Montpellier, France), the results of the blood cells count obtained with the generic reagents kit made by SFRI Company (Saint-Jean d'Illac, France, www.sfri.com) have been compared with the results obtained with the genuine reagents supplied by Horiba ABX Company. MATERIALS AND METHOD: 50 whole blood samples (EDTA tubes) collected during the blood donation procedures were used after their biological tests in the blood bank, for the statistical study. Linearity, correlation coefficients, coefficient of variation (CV), means and DS were calculated and compared. RESULTS: overall correlations calculated between the both reagents kits were excellent. No statistical differences were found comparing the means, linearity and CV. These results were suggesting that uses of these generic reagents kits sensibly were able to improve the ratio Price Quality of the blood cell counts in routine.     

Utility of white blood cell suspect flags and histogram pattern in the detection of acute leukemia by Advia-60 automated hematology analyzer

Blood samples from patients with acute leukemia, when analyzed with automated hematology counters, tend to introduce inaccuracies in the automated differential count and can cause diagnostic confusion without providing definite clues to the presence of abnormal cells. We designed this study to assess the utility of white blood cell (WBC) flags and histogram pattern generated by Advia-60 automated hematology analyzer in the recognition and categorization of acute leukemia. Data printouts of 31 newly diagnosed cases of acute leukemia, 22 with acute myeloid leukemia (AML) and 9 with acute lymphoblastic leukemia (ALL) were reviewed. All cases of AML and ALL generated the WBC suspect blastflag M2 associated with two of the non blast suspectflags G1 and G2. Among the cases of AML, 95.5% of the WBC histogram patterns were definitive of the presence of abnormal cells and were indicative of the myeloid nature of cells. Only 44.4% of the histograms in the cases of ALL could be definitive of the presence of abnormal cells and 33.3% were indicative of their lymphoid nature. Significantly, 55.5% of the histograms in ALL were normal. The false positives for both AML and ALL were 10.5% when only WBC flagging was considered and were reduced to 0.05% when the flags were combined with histogram patterns for interpretation. Combined flagging and histogram recognition can be of aid in identifying cases of acute leukemia and the morphologist can then assess these samples further. This ensures that cases of acute leukemia, especially in high output laboratories, are not inadvertently missed.     

A rapid method for electron microscopic examination of blood cells.

A method is described whereby the time required for the processing of white blood cells for electron microscopy can be shortened from 36 to 3 1/2 hours. Because cells of the peripheral blood are not attached to each other, fixation, dehydration, and infiltration of the embedding medium is more rapid. This makes it possible for clinicians to use fine structural data for diagnosis as illustrated in three cases.     

The technicon H*1--an automated hematology analyzer for today and tomorrow. Complete blood count parameters

The performance of the Technicon H*1 was evaluated in the computerized, high-volume hematology laboratory at M.D. Anderson Hospital and Tumor Institute and compared with that of reference instrumentation used for routine patient care. The precision, linearity, and lack of carry-over of this instrument was excellent for the entire dynamic range of all nine tested parameters (white blood cells [WBCs], red blood cells [RBCs], hemoglobin [Hgb], hematocrit [Hct], mean corpuscular volume [MCV], mean corpuscular hemoglobin [MCH], mean corpuscular hemoglobin concentration [MCHC], red blood cell distribution width [RDW], and platelets [Plts]). Coefficients of correlation for all directly measured parameters were always 0.98 or greater, with the exception of the MCV and RDW parameters, for which r = 0.89 and 0.93, respectively. Special emphasis was placed on WBC and Plt counts at low ranges. When compared with reference methods the correlation for both parameters was very good, r = 0.99 for WBCs less than 4.0 X 10(3)/microL (4.0 X 10(9)/L) and 0.91 for Plt less than 100 X 10(3)/microL (100 X 10(9)/L). These excellent performance characteristics for the CBC parameters, combined with the ability of the analyzer to perform a full WBC differential (to be described in the next report), make the H*1 a superior advancement in the field of automated hematology.     

Evaluation of the LaserCyte: an in-house hematology analyzer for dogs and cats

In the present study, the LaserCyte instrument, a fully automated flow cytometer for use in veterinary practice, was evaluated for dogs and cats. Precision (coefficient of variation, CV) for red blood cell (RBC) parameters was ≤3.9%, for reticulocytes between 14.9 and 102%, for white blood cells (WBC) between 3 and 9.5%, for neutrophils between 3.9 and 6.5%, for lymphocytes between 7 and 17.9%, for monocytes between 4.9 and 13.1%, for eosinophils between 10.4 and 32.1%, for basophils between 7.8 and 32%, for platelets between 3.1 and 13.2%, and for platelet indices between 0 and 28.2%. The range of linearity extended the reference ranges. The agreement with reference methods (coefficient of correlation, r) were ≥0.96 (RBC), ≥0.94 (hematocrit), ≥0.96 (hemoglobin), ≥0.95 (mean corpuscular volume), ≥0.94 (WBC), ≥0.93 (neutrophils), ≥0.77 (lymphocytes), ≥0.77 (monocytes), ≥0.29 (eosinophils), ≥0.03 (basophils), ≥0.13 (reticulocytes), and ≥0.86 (platelets). The LaserCyte allowed the correct assessment of RBC and WBC parameters with respect to clinical relevance in the majority of samples. Lymphocytopenia was detected in only 51 out of 89 cases and monocytopenia in one out of 11 cases. The reticulocyte counts were correctly estimated in 85 out of 149 cases. It was concluded that the LaserCyte allowed reliable determination of the RBC parameters, WBCs, neutrophils in both species and platelets in dogs. Based on its capability to reliably determine feline platelets and of the parameters mentioned above, this instrument is considered a useful in-house analyzer for the veterinary practice. Qualitative microscopic assessment of blood smears is still necessary for detecting abnormal cell morphologies, certain cell precursors and blood parasites.

Comparison of microscopic examination,rK39, and PCR for visceral leishmaniasis diagnosis in Turkey

The laboratory diagnosis of visceral leishmaniasis is based on microscopic examination, culture, serological tests, and molecular methods. In this study, we examined 50 blood specimens from suspected visceral leishmaniasis patients by microscopic examination, recombinant antigen dipstick test (rK39), and polymerase chain reaction (PCR) in the University of Cukurova, Faculty of Medicine, Parasitology Department in Turkey. We calculated the sensitivity–specificity and positive–negative predictive values for these diagnostic tests. We found that positive predictive value of microscopy examination, rK39 dipstick test, and PCR were 20%, 24%, and 58% for visceral leishmaniasis, respectively. When we compared polymerase chain reaction, recombinant antigen dipstick test, and microscopic examination for visceral leishmaniasis diagnosis, the polymerase chain reaction is more sensitive (100%) than recombinant antigen dipstick test and microscopy examination.     

Accuracy, precision and clinically acceptable level of complete blood cell count by an automated multichannel hematology analyzer]

Measurement of complete blood cell count (CBC) is one of the essential laboratory tests. In this study, the accuracy of CBC was high, when measured by six different automated blood cell counters, including SE-9000/RAM-1, CELL-DYN 4000, ADVIA 120, VEGA RETIC-LC141 or GEN*S. The correlations of CBC counts among these instruments were also good. In contrast, the accuracy in abnormal samples depended on matching the instrument and type of clinical conditions. Internal quality control of automated multichannel hematology analyzers was recommended by the NCCLS H26-A in 1996. However, actual external quality control of the CBC count was poorly understood. We surveyed three samples from healthy volunteers for CBC values in 1997. Among six different instruments, the inter-assay of the red blood cell count (RBC), hemoglobin, hematocrit and MCV was fairly good, shown as < 4.2%, < 3.0%, < 4.4% and < 3.4%, respectively. In contrast, the inter-assay of the white blood cell count (WBC) and platelet (PLT) was not good, shown as < 11.4% and < 9.6%, respectively. The clinically acceptable levels for the blood cell count were reported to be 4% for RBC, 3% for hemoglobin, 4% for MCV, 5% for WBC and 7% for PLT, by JCCLS in 1994. The clinically acceptable CBC by hematologists at Keio University resembled those by councilors of The Japanese Society of Clinical Hematology, whereas, residents at Keio University and general physicians required more precise clinical CBC counts. These results indicate that a larger study is needed to clarify the accuracy, clinically acceptable level, and performance of different automated blood cell counters.     

The "diff-if". Use of microcomputer analysis to triage blood specimens for microscopic examination

Increasingly, all automated blood counts are not accompanied by a microscopic white blood cell differential. A popular strategy is to obtain a manual differential if any part of the automated blood count and differential is outside specified limits (the "diff-if" strategy). The authors compared two sets of criteria to triage blood counts for manual differentials: previously recommended numeric values, and the analysis of a microcomputer program. In a population of subjects with a high percentage of hematologic disorders, the microcomputer program and the numeric criteria were equally specific (excluding normal blood smears); the program was more sensitive for bands, immature granulocytes, monocytes, nucleated red blood cells, reticulocytosis, teardrops, red blood cell fragments, and hypersegmented neutrophils. The numeric criteria were more sensitive for eosinophilia (less than 1.0 X 10(9)/L) and mandated fewer manual differentials. In a population of predominantly normal subjects, the program was more sensitive for increased bands and equally sensitive for eosinophilia, the only abnormalities observed on the smear. In a population of subjects with predominantly abnormal blood counts, but excluding most primary hematologic disorders, there were few blood smears with abnormalities beyond eosinophilia or increased bands. In both of these groups, the computer program mandated more manual differentials than did the numeric criteria. The authors conclude that microcomputer analysis by the program tested was more sensitive than numeric criteria to identify specimens with abnormal blood smears. Specificity depended on the patient population. The choice of a triage strategy should be based on the individual laboratory's patient population.     

Electron microscopic examination of the interaction between human erythrocytes and liposomes containing DC-Cholesterol

Human erythrocytes treated with cationic liposomes containing DOPC/DC cholesterol (2∶3 mol/mol) or DOPE/DC cholesterol (2∶3 mol/mol) are studied by electron microcopy. DOPE-containing liposomes exhibit a markedly greater ability to interact with the erythrocyte surface and to initiate a mosaic structure represented by smooth and rough surfaces on freeze-fractures of the erythrocyte plasma membrane. The interaction between DOPE/DC-cholesterol-containing liposomes and the plasma membrane provides the basis for using these liposomes to deliver DNA into the cell cytoplasm. Translated fromByulleten' Eksperimental'noi Biologii i Meditsiny, Vol. 122, No. 7, pp. 83–86, July, 1996