Abstract:
INTRODUCTION:Lupus anticoagulant (LAC) testing is a multistep procedure including screening, mixing, and confirmation tests. STA Coag Expert is a software module for STA R Max and STA Compact Max analyzers which includes an on-demand LAC algorithm, based on ISTH guidelines, for automatic interpretation, calculation, and launch of assays in LAC interpretation ("Stago coag algorithm"). MATERIALS AND METHODS:One hundred ninety four patient samples were analyzed in parallel and interpreted manually and automatically by LAC algorithms. LAC algorithms use identical flowcharts and cutoff values as in daily practice. Differently, it only uses index of circulating anticoagulant (ICA), whereas in routine also normalized ratios were assessed for interpretation of mixing tests. Interpretation of dRVVT and aPTT pathways and final conclusions were compared between both approaches. RESULTS:Compared to routine interpretation, LAC algorithm showed a sensitivity of 94% and a specificity of 100% for LAC detection, when discrepancies due to measured clotting times between both analyzers were excluded. Three false negatives were due to different interpretation of dRVVT mixing test. Discrepancies in interpretation of the aPTT mixing test (n = 11) did not result in discrepant final LAC result, all having negative confirmation tests. No false positives were observed. With LAC algorithm, hands-on time reduced from 200 to 80 minutes. CONCLUSION:The LAC algorithm of the STA Coag Expert shows good comparability to the manual interpretation of LAC and may be used to assist laboratories in automatic launching of additional tests and in interpretation of LAC according to ISTH guidelines. This way the STA Coag Expert LAC algorithm may improve interlaboratory and STA comparability of LAC results.
journal_name
Int J Lab Hematoljournal_title
International journal of laboratory hematologyauthors
Florin L,Desloovere M,Devreese KMJdoi
10.1111/ijlh.13001subject
Has Abstractpub_date
2019-06-01 00:00:00pages
412-417issue
3eissn
1751-5521issn
1751-553Xjournal_volume
41pub_type
杂志文章abstract:BACKGROUND:Hematological patients, receiving intensive chemotherapy (predominantly acute leukemia patients), have repeated postchemotherapy periods with severe bone marrow suppression. As a result, these patients require regular monitoring of the complete blood counts (CBC) for optimal patient care. To reduce the strai...
journal_title:International journal of laboratory hematology
pub_type: 杂志文章
doi:10.1111/ijlh.13330
更新日期:2021-02-01 00:00:00
abstract:INTRODUCTION:Point-of-care (POC) international normalized ratio (INR) values above an institutional cutoff are confirmed in the laboratory using a gold standard venous specimen. This can be problematic in a pediatric setting. METHOD:In this study, 449 consecutive POC INR results were compared to an INR performed in th...
journal_title:International journal of laboratory hematology
pub_type: 杂志文章
doi:10.1111/ijlh.12920
更新日期:2019-02-01 00:00:00
abstract:INTRODUCTION:Capillary electrophoresis (CE) is a high-resolution method for detection of hemoglobin Constant Spring (Hb CS). METHODS:The levels of Hb CS quantified by CE were compared among three groups of samples including heterozygote and homozygote of Hb CS as well as Hb H-CS disease classified by DNA molecular dia...
journal_title:International journal of laboratory hematology
pub_type: 杂志文章
doi:10.1111/j.1751-553X.2011.01371.x
更新日期:2012-04-01 00:00:00
abstract::Myelodysplastic syndrome (MDS) with hypocellular bone marrow (BM) is often difficult to distinguish from aplastic anemia (AA). Furthermore, the diagnosis of MDS with low blast counts and normal karyotype may be problematic. These issues highlight the need for a reliable marker for the diagnosis of MDS. This study was ...
journal_title:International journal of laboratory hematology
pub_type: 杂志文章
doi:10.1111/j.1751-553X.2008.01056.x
更新日期:2009-06-01 00:00:00
abstract::The pathogenesis of acute myeloid leukaemias (AML) frequently requires at least 3 mutations in different cellular pathways. In many cases, mutations in proliferation/survival mechanisms and differentiation pathways are involved. Genetic aberrations explain the pathogenesis of AML, provide prognostic criteria and guide...
journal_title:International journal of laboratory hematology
pub_type: 杂志文章
doi:10.1111/ijlh.12831
更新日期:2018-05-01 00:00:00
abstract:INTRODUCTION:TET2, a member of the Ten-Eleven translocation gene family, catalyzes the conversion of 5-methylcytosine to 5-hydroxymethylcytosine in DNA. Low expression of TET2 has been reported as a prognostic factor for several types of malignancies in adult patients. However, there have been few data on the effect of...
journal_title:International journal of laboratory hematology
pub_type: 杂志文章
doi:10.1111/ijlh.13099
更新日期:2019-10-01 00:00:00
abstract:INTRODUCTION:In daily practice in haematology laboratories, red blood cell (RBC) abnormalities are frequent and their management is a real challenge. The aim of this study is to establish a "decision tree" using RBC and reticulocyte parameters from the SYSMEX XN-10 analyser to distinguish between patients with a heredi...
journal_title:International journal of laboratory hematology
pub_type: 杂志文章
doi:10.1111/ijlh.13278
更新日期:2020-12-01 00:00:00
abstract:INTRODUCTION:Early diagnosis and identification of potential critical cases for timely treatment are crucial for COVID-19 patients. The aim of this study was to analyze the diagnostic and prognostic implications of WBC and cell population data (CPD) abnormalities related to COVID-19 at disease onset. METHODS:Baseline ...
journal_title:International journal of laboratory hematology
pub_type: 杂志文章
doi:10.1111/ijlh.13395
更新日期:2020-11-15 00:00:00
abstract:INTRODUCTION:Women are at higher risk of venous thromboembolism (VTE) during pregnancy and the puerperium. Global coagulation assays (GCAs), including thromboelastography (TEG), thrombin generation using the calibrated automated thrombogram (CAT) and fibrin generation using the overall haemostatic potential assay (OHP)...
journal_title:International journal of laboratory hematology
pub_type: 杂志文章
doi:10.1111/ijlh.13389
更新日期:2020-11-10 00:00:00
abstract:INTRODUCTION:Dehydration, fluid shifts or changes in coagulation occurring during air travel can trigger distinct reactions in the haematological system. Athletes are concerned that these effects might impair sporting performance, increase the risk of thrombosis or cause abnormalities in blood values that might be mist...
journal_title:International journal of laboratory hematology
pub_type: 杂志文章
doi:10.1111/j.1751-553X.2012.01450.x
更新日期:2012-12-01 00:00:00
abstract:INTRODUCTION:Clot waveform analysis (CWA), a new methodology to assess coagulation process, can be usefully applied in various clinical settings. However, its clinical use is limited mainly because of the absence of standardization. No consensus exists regarding the wavelengths at which CWA has to be performed what is ...
journal_title:International journal of laboratory hematology
pub_type: 杂志文章
doi:10.1111/ijlh.12975
更新日期:2019-06-01 00:00:00
abstract::Multiple myeloma (MM) is a malignant plasma cell disorder that involves multiple genetic abnormalities. Chimeric transcription factors, created by gene fusion as a result of chromosomal translocations, have been implicated in the pathogenesis of the disease. Here, we report the conventional cytogenetic analysis of a M...
journal_title:International journal of laboratory hematology
pub_type: 杂志文章
doi:10.1111/j.1751-553X.2006.00837.x
更新日期:2007-06-01 00:00:00
abstract:INTRODUCTION:Laboratory investigations for bleeding disorders are warranted when an individual has a personal and/or family history of bleeding, and/or laboratory findings that suggest the possibility of an inherited or acquired bleeding disorder. METHODS:This review summarizes author's experience with ordering and re...
journal_title:International journal of laboratory hematology
pub_type: 杂志文章,评审
doi:10.1111/ijlh.12822
更新日期:2018-05-01 00:00:00
abstract:INTRODUCTION:Severe COVID-19 is often compounded by a prothrombotic state that is associated with poor outcomes. In this investigation, we aimed to evaluate ADAMTS13 activity, von Willebrand factor level (VWF:Ag), and the corresponding ADAMTS13 activity/VWF:Ag ratio, in patients with COVID-19 and for associations with ...
journal_title:International journal of laboratory hematology
pub_type: 杂志文章
doi:10.1111/ijlh.13415
更新日期:2020-12-03 00:00:00
abstract:INTRODUCTION:It has been recently suggested that microparticles (MP) play a role in the pathogenesis of thrombotic complications. This study aimed to assess the contribution of procoagulant activity expressed by circulating MP in thrombotic events in MPN patients. METHODS:Seventy-four MPN patients were enrolled in a t...
journal_title:International journal of laboratory hematology
pub_type: 杂志文章
doi:10.1111/ijlh.12676
更新日期:2017-10-01 00:00:00
abstract:INTRODUCTION:Malaria is a life-threatening infectious disease, which has been for long confined to specific endemic areas. Nevertheless, the recent increase in immigration flows from endemic regions and imported cases has reemphasized many diagnostic challenges in Western countries, thus paving the way to introduce rap...
journal_title:International journal of laboratory hematology
pub_type: 杂志文章
doi:10.1111/ijlh.12790
更新日期:2018-06-01 00:00:00
abstract::The consistent multi-ethnic migrations of the last decades have considerably changed the epidemiology of the hemoglobinopathies. Healthy carriers of these conditions are present today in many nonendemic parts of the world, and severely affected children are now born where these diseases were previously rare or unknown...
journal_title:International journal of laboratory hematology
pub_type: 杂志文章,评审
doi:10.1111/ijlh.12037
更新日期:2013-10-01 00:00:00
abstract::Direct international normalized ratio (INR) determination using certified INR plasmas was shown to improve precision and accuracy. We evaluated the utility of a multicalibrator in determining INR. INR values were measured in 493 blood samples from patients subjected to anticoagulation therapy (320) and control subject...
journal_title:International journal of laboratory hematology
pub_type: 杂志文章
doi:10.1111/j.1751-553X.2009.01195.x
更新日期:2010-08-01 00:00:00
abstract:INTRODUCTION:Several factors influence the severity of Plasmodium falciparum; here, we investigate the impact of alpha+-thalassaemia genotype on P. falciparum parasitemia and prevalence of severe anaemia amongst microcytic children from Kumasi, Ghana. METHODS:Seven hundred and thirty-two children (≤10 years) with P. f...
journal_title:International journal of laboratory hematology
pub_type: 杂志文章
doi:10.1111/ijlh.12122
更新日期:2014-02-01 00:00:00
abstract::The diagnosis of iron deficiency in hospital patients can be difficult in the presence of inflammation. A raised serum transferrin receptor (sTfR) level is useful as a marker of iron deficiency as it is unaffected by inflammation. However, diseases that cause an increase in erythropoietic activity can also result in a...
journal_title:International journal of laboratory hematology
pub_type: 杂志文章
doi:10.1111/j.1751-553X.2007.00982.x
更新日期:2008-12-01 00:00:00
abstract::Flow cytometry (FCM) allows scientists to rapidly quantify up to 50 parameters for millions of cells per sample. The bottleneck in the application of the technology is data analysis, and the high number of parameters measured by the current generation of instruments requires the use of advanced computational algorithm...
journal_title:International journal of laboratory hematology
pub_type: 杂志文章,评审
doi:10.1111/ijlh.13016
更新日期:2019-05-01 00:00:00
abstract:INTRODUCTION:Immature platelet fraction (IPF) is a parameter for reticulated platelets. A high percentage IPF (%-IPF) is indicative of consumptive or recovering thrombocytopenic disorders in contrast to a low %-IPF seen in aplastic states. Absolute IPF (A-IPF) specifically reflects the number of immature platelets in c...
journal_title:International journal of laboratory hematology
pub_type: 杂志文章
doi:10.1111/ijlh.12049
更新日期:2013-10-01 00:00:00
abstract::The PENTRA 60C(+) hematology analyzer provides a complete blood cell (CBC) count, including a five-part differential (5-DIFF) count and two leukocyte subpopulations, i.e. large immature cells (LIC's) and atypical lymphocytes (ALY's). We evaluated its analytical performance and assessed agreement with the ADVIA 2120, i...
journal_title:International journal of laboratory hematology
pub_type: 杂志文章
doi:10.1111/j.1751-553X.2007.01011.x
更新日期:2009-04-01 00:00:00
abstract:BACKGROUND:The MRD status detected using multiparameter flow cytometry (MFC) before allogeneic hematopoietic stem cell transplantation (allo-HSCT) has crucial prognostic value for patients with acute myeloid leukemia (AML) in morphologic complete remission (CR). We designed a novel panel of antibodies to identify aberr...
journal_title:International journal of laboratory hematology
pub_type: 杂志文章
doi:10.1111/ijlh.13070
更新日期:2019-10-01 00:00:00
abstract:INTRODUCTION:Participation in external quality assessment (EQA) is central to the maintenance of high-quality laboratory results in patient diagnosis and clinical trials. Laboratories in the TAF112582 DETECTIVE study (ClinicalTrials.gov identifier: NCT01376167) are enrolled in the United Kingdom National Quality Assess...
journal_title:International journal of laboratory hematology
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1111/ijlh.12627
更新日期:2017-06-01 00:00:00
abstract:INTRODUCTION:Paroxysmal nocturnal hemoglobinuria (PNH) is a hemolytic, clonal and acquired disorder of the hematopoietic stem cell with a deficiency of all glycophosphatidyl-inositol (GPI) linked proteins. The aim of this retrospective study was to analyse haematological and biochemical data from 152 patients referred ...
journal_title:International journal of laboratory hematology
pub_type: 杂志文章
doi:10.1111/ijlh.12156
更新日期:2014-04-01 00:00:00
abstract::Platelets play a central role in physiological hemostasis and also in pathological thrombosis. It is well established that congenital or acquired abnormalities of platelet function are associated with a heightened risk of bleeding of variable severity and excessive hemorrhage after surgery or trauma. Several kinds of ...
journal_title:International journal of laboratory hematology
pub_type: 杂志文章
doi:10.1111/ijlh.12539
更新日期:2016-05-01 00:00:00
abstract:INTRODUCTION:Monitoring of factor IX (FIX) replacement therapy in haemophilia B relies on accurate coagulation assays. However, considerable interlaboratory variability has been reported for one-stage clotting (OSC) assays. This study aimed to evaluate the real-world, interlaboratory variability of routine FIX activity...
journal_title:International journal of laboratory hematology
pub_type: 杂志文章,多中心研究
doi:10.1111/ijlh.13189
更新日期:2020-06-01 00:00:00
abstract::Congenital protein C deficiency significantly increases the risk of venous thromboembolism, a serious and potentially lethal condition. Protein C levels can be determined by chromogenic, clotting and antigenic assays, each type of assay has differences in specificity and sensitivity to protein C deficiency. In princip...
journal_title:International journal of laboratory hematology
pub_type: 杂志文章
doi:10.1111/j.1751-553X.2007.00972.x
更新日期:2008-10-01 00:00:00
abstract:INTRODUCTION:Aberrant activation of Janus kinase (JAK)/signal transducer and activator of transcription (STAT) pathway leads to deregulated proliferation, differentiation, or apoptosis of normal cells. One of the members of this family, JAK2, plays a very important role in metabolizing carcinogens and medications. This...
journal_title:International journal of laboratory hematology
pub_type: 杂志文章
doi:10.1111/j.1751-553X.2011.01386.x
更新日期:2012-06-01 00:00:00