Scandinavian Journal of Clinical & Laboratory Investigation最新文献

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Reliability of a point of care testing blood gas analyzer for measurement of lactate levels in cerebrospinal fluid. 用于测量脑脊液中乳酸水平的护理点检测血气分析仪的可靠性。
IF 1.3 4区 医学
Scandinavian Journal of Clinical & Laboratory Investigation Pub Date : 2024-02-01 Epub Date: 2024-02-20 DOI: 10.1080/00365513.2024.2318619
Alberto Fernández Reina, María Dolores López Abellán, Samir Attaibi Hadri, Ángela Puche Candel, María Isabel Díaz López, Eva Pérez Fernández, Manuel Tomás Orgaz Morales, Luis García de Guadiana-Romualdo
{"title":"Reliability of a point of care testing blood gas analyzer for measurement of lactate levels in cerebrospinal fluid.","authors":"Alberto Fernández Reina, María Dolores López Abellán, Samir Attaibi Hadri, Ángela Puche Candel, María Isabel Díaz López, Eva Pérez Fernández, Manuel Tomás Orgaz Morales, Luis García de Guadiana-Romualdo","doi":"10.1080/00365513.2024.2318619","DOIUrl":"10.1080/00365513.2024.2318619","url":null,"abstract":"<p><p>Analysis of cerebrospinal fluid (CSF), including lactate, is key for diagnosis of acute meningitis. Since blood gas analyzers (BGA) enable rapid and safe blood-lactate measurements, we evaluated the reliability of RAPIDPoint 500 BGA to provide a fast and accurate measure of CSF lactate. In this study, CSF lactate levels were measured by a reference assay and on RAPIDPoint 500 BGA. Comparability was evaluated through difference analysis, using Bland Altman test, and linear regression analysis, using the Passing Bablok test. Agreement rate according to CSF lactate (≥3.5 and <3.5 mmol/L) was calculated using kappa (κ) statistic. Population study included 98 CSF samples. Concerning difference analysis, according to Bland-Altman test, bias was 0.13 mmol/L (CI 95%: -0.26 to 0.52 mmol/L. In regression analysis, according to Passing-Bablok equation a systematic difference between both assays was found. In concordance analysis, the interrate realibility was very high (κ: 0.964). According to our resuls, although a systematic difference was detected when lactate levels were measured on RAPIDPoint 500 BGA, the results from Bland-Altman test and the high agreement rate support that this POCT analyzer could be useful for a early and safe detection of patients with high probability of increased CSF lactate level.</p>","PeriodicalId":21474,"journal":{"name":"Scandinavian Journal of Clinical & Laboratory Investigation","volume":" ","pages":"76-78"},"PeriodicalIF":1.3,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139906370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analysis of HbA1c using microfluidic card (Capitainer qDBS card) as a pre-step before determination of the HbA1c value with an immunological method. 在使用免疫学方法测定 HbA1c 值之前,先使用微流控芯片(Capitainer qDBS 芯片)分析 HbA1c。
IF 1.3 4区 医学
Scandinavian Journal of Clinical & Laboratory Investigation Pub Date : 2024-02-01 Epub Date: 2024-01-19 DOI: 10.1080/00365513.2024.2303720
Niclas Rollborn, Anders Larsson, Kim Kultima
{"title":"Analysis of HbA1c using microfluidic card (Capitainer qDBS card) as a pre-step before determination of the HbA1c value with an immunological method.","authors":"Niclas Rollborn, Anders Larsson, Kim Kultima","doi":"10.1080/00365513.2024.2303720","DOIUrl":"10.1080/00365513.2024.2303720","url":null,"abstract":"<p><p>The objective of the study was to evaluate Capitainer's quantitative dried blood spots (qDBS) card for Hemoglobin A1c (HbA1c) testing. qDBS cards can be used for at-home sampling for HbA1c determination in a Swedish laboratory setting. A total of 153 routine requested HbA1c samples were used in this evaluation of microfluidic cards (qDBS). The HbA1c was extracted from the disc and HbA1c was determined at cobas 6000 instruments with immunological technology. The results were compared with results from traditional venous HbA1c testing. The reproducibility of using this elution procedure was 4.0% measured as coefficient of variation at a HbA1c concentration of 51 mmol/mol. Analytical performance specifications for HbA1c < 52 mmol/mol using DBS card (c501) compared with assigned values from Capillarys 3 was (y) = 1.03 x Capillarys 3(x) - 0.87; R<sup>2</sup> = 0.97. There is a good agreement between HbA1c determined by traditional HbA1c testing and determination from Capitainer's qDBS cards. This shows that the technology could be used for out-of doctor's office testing.</p>","PeriodicalId":21474,"journal":{"name":"Scandinavian Journal of Clinical & Laboratory Investigation","volume":" ","pages":"11-15"},"PeriodicalIF":1.3,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139492113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Kinetics of insulin and C-peptide and estimation of prehepatic insulin secretion rates after intravenous glucose stimulation using arterial versus venous blood sampling in healthy males. 健康男性静脉葡萄糖刺激后胰岛素和 C 肽的动力学以及肝前胰岛素分泌率的估算(动脉采血与静脉采血)。
IF 1.3 4区 医学
Scandinavian Journal of Clinical & Laboratory Investigation Pub Date : 2024-02-01 Epub Date: 2024-01-24 DOI: 10.1080/00365513.2024.2306537
Emil Brink Wriedt, Urd Kielgast, Maria S Svane, Søren Møller, Sten Madsbad
{"title":"Kinetics of insulin and C-peptide and estimation of prehepatic insulin secretion rates after intravenous glucose stimulation using arterial versus venous blood sampling in healthy males.","authors":"Emil Brink Wriedt, Urd Kielgast, Maria S Svane, Søren Møller, Sten Madsbad","doi":"10.1080/00365513.2024.2306537","DOIUrl":"10.1080/00365513.2024.2306537","url":null,"abstract":"<p><p>An intravenous glucose-infusion of 0.3 g glucose per Kg body weight was administered over 1 min in nine healthy males with simultaneous blood sampling from the hepatic vein, femoral artery and a peripheral vein. Insulin secretion rates (ISR) were determined by the Eaton method and the ISEC method using C-peptide concentrations from arterial and peripheral venous blood. First phase (0-10 min), second phase (10-60 min), and total insulin secretion (0-60 min) were calculated as the incremental areas (iAUC) above baseline. The primary endpoint was first phase insulin response. The first phase insulin response in artery and venous blood did not differ with the Eaton method (<i>p</i> = 0.25), but was significantly greater with the ISEC method in arterial compared with venous blood (<i>p</i> < 0.05). The first phase insulin responses did not differ between methods in artery (<i>p</i> = 0.73) or venous blood (<i>p</i> = 0.73). The first phase responses of insulin and C-peptide were significant higher in the hepatic vein compared with those in the artery (<i>p</i> < 0.05) and peripheral vein (<i>p</i> < 0.05) but did not differ significantly between the artery compared with the peripheral vein for insulin (<i>p</i> = 0.09) or C-peptide (<i>p</i> = 0.26). Prehepatic insulin secretion rates did not differ between the Eaton and ISEC methods, but with the ISEC method the first phase insulin response was significantly greater in arterial compared with venous blood. The first phase insulin response differs when calculated from plasma insulin or C-peptide and depends on sample sites.</p>","PeriodicalId":21474,"journal":{"name":"Scandinavian Journal of Clinical & Laboratory Investigation","volume":" ","pages":"16-23"},"PeriodicalIF":1.3,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139542538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Plasma legumain in familial hypercholesterolemia: associations with statin use and cardiovascular risk markers. 家族性高胆固醇血症患者的血浆豆豆蛋白酶:与他汀类药物的使用和心血管风险指标的关系。
IF 1.3 4区 医学
Scandinavian Journal of Clinical & Laboratory Investigation Pub Date : 2024-02-01 Epub Date: 2024-02-06 DOI: 10.1080/00365513.2024.2309617
Ida Gregersen, Ingunn Narverud, Jacob Juel Christensen, Anders Hovland, Linn K L Øyri, Thor Ueland, Kjetil Retterstøl, Martin P Bogsrud, Pål Aukrust, Bente Halvorsen, Kirsten B Holven
{"title":"Plasma legumain in familial hypercholesterolemia: associations with statin use and cardiovascular risk markers.","authors":"Ida Gregersen, Ingunn Narverud, Jacob Juel Christensen, Anders Hovland, Linn K L Øyri, Thor Ueland, Kjetil Retterstøl, Martin P Bogsrud, Pål Aukrust, Bente Halvorsen, Kirsten B Holven","doi":"10.1080/00365513.2024.2309617","DOIUrl":"10.1080/00365513.2024.2309617","url":null,"abstract":"<p><p>Legumain is known to be regulated in atherosclerotic disease and may have both pro- and anti-atherogenic properties. The study aimed to explore legumain in individuals with familial hypercholesterolemia (FH), a population with increased cardiovascular risk. Plasma legumain was measured in 251 subjects with mostly genetically verified FH, of which 166 were adults (≥18 years) and 85 were children and young adults (<18 years) and compared to 96 normolipidemic healthy controls. Plasma legumain was significantly increased in the total FH population compared to controls (median 4.9 versus 3.3 pg/mL, respectively, <i>p</i> < 0.001), whereof adult subjects with FH using statins had higher levels compared to non-statin users (5.7 versus 3.9 pg/mL, respectively, <i>p</i> < 0.001). Children and young adults with FH (<i>p</i> = 0.67) did not have plasma legumain different from controls at the same age. Further, in FH subjects, legumain showed a positive association with apoB, and markers of inflammation and platelet activation (i.e. fibrinogen, NAP2 and RANTES). In the current study, we show that legumain is increased in adult subjects with FH using statins, whereas there was no difference in legumain among children and young adults with FH compared to controls. Legumain was further associated with cardiovascular risk markers in the FH population. However the role of legumain in regulation of cardiovascular risk in these individuals is still to be determined.</p>","PeriodicalId":21474,"journal":{"name":"Scandinavian Journal of Clinical & Laboratory Investigation","volume":" ","pages":"24-29"},"PeriodicalIF":1.3,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139692822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Five days serum glucose stability at room-temperature in centrifuged fast-clotting serum tubes and the comparability with glucose in heparin-plasma and plasma containing citrate-stabilizer. 离心快速凝固血清管中血清葡萄糖在室温下五天的稳定性,以及与肝素血浆和含柠檬酸盐稳定剂血浆中葡萄糖的可比性。
IF 1.3 4区 医学
Scandinavian Journal of Clinical & Laboratory Investigation Pub Date : 2024-02-01 Epub Date: 2024-03-07 DOI: 10.1080/00365513.2024.2318617
Hanne Bakkebø, Karen Lund Haaland, Kristin Solli Hoff, Lutz Schwettmann
{"title":"Five days serum glucose stability at room-temperature in centrifuged fast-clotting serum tubes and the comparability with glucose in heparin-plasma and plasma containing citrate-stabilizer.","authors":"Hanne Bakkebø, Karen Lund Haaland, Kristin Solli Hoff, Lutz Schwettmann","doi":"10.1080/00365513.2024.2318617","DOIUrl":"10.1080/00365513.2024.2318617","url":null,"abstract":"<p><p>Glucose measurement plays a central role in the diagnosis of gestational diabetes mellitus (GDM). Because of earlier reports of overestimation of glucose in the widely used tubes containing granulated glycolysis inhibitor, the study assessed the performance of fast-clotting serum tubes as an alternative sample for the measurement of glucose. Glucose concentration in fast-clotting serum was compared to lithium-heparin plasma placed in an ice-water slurry after sample collection and glucose stability at room-temperature was studied. Blood samples from 30 volunteers were drawn in four different types of tubes (serum separator tubes, fast-clotting serum tubes, lithium-heparin tubes and sodium fluoride, EDTA and a citrate buffer (NaF-EDTA-citrate) tubes, all from Greiner Bio-One). Lithium-heparin tubes were placed in an ice-water slurry until centrifugation in accordance with international recommendations and centrifuged within 10 min. After centrifugation, glucose was measured in all tubes (timepoint <i>T</i><sub>0</sub>) and after 24, 48, 72, 96 and 120 h of storage at 20-22 °C. NaF-EDTA-citrate plasma showed significant overestimation of glucose concentration by 4.7% compared to lithium-heparin plasma; fast-clotting serum showed glucose concentrations clinically equivalent to lithium-heparin plasma. In fast-clotting serum tubes, mean bias between glucose concentration after 24, 48, 72, 96 and 120 h and <i>T</i><sub>0</sub> was less than 2.4%. All individual differences compared to <i>T</i><sub>0</sub> were less than 6.5%. The results fulfill the acceptance criteria for sample stability based on biological variation. Fast-clotting serum tubes can be an alternative for the measurement of glucose in diagnosis and management of GDM and diabetes mellitus, especially when prolonged transportation is necessary.</p>","PeriodicalId":21474,"journal":{"name":"Scandinavian Journal of Clinical & Laboratory Investigation","volume":" ","pages":"62-67"},"PeriodicalIF":1.3,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140050280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Duplicate measures of hemoglobin mass within an hour: feasibility, reliability, and comparison of three devices in supine position. 一小时内重复测量血红蛋白质量:三种设备在仰卧位下的可行性、可靠性和比较。
IF 1.3 4区 医学
Scandinavian Journal of Clinical & Laboratory Investigation Pub Date : 2024-02-01 Epub Date: 2024-01-24 DOI: 10.1080/00365513.2024.2303711
Andreas Breenfeldt Andersen, Thomas Christian Bonne, Nikolai Baastrup Nordsborg, Henrik Holm-Sørensen, Jacob Bejder
{"title":"Duplicate measures of hemoglobin mass within an hour: feasibility, reliability, and comparison of three devices in supine position.","authors":"Andreas Breenfeldt Andersen, Thomas Christian Bonne, Nikolai Baastrup Nordsborg, Henrik Holm-Sørensen, Jacob Bejder","doi":"10.1080/00365513.2024.2303711","DOIUrl":"10.1080/00365513.2024.2303711","url":null,"abstract":"<p><p>Duplicate measure of hemoglobin mass by carbon monoxide (CO)-rebreathing is a logistical challenge as recommendations prompt several hours between measures to minimize CO-accumulation. This study investigated the feasibility and reliability of performing duplicate CO-rebreathing procedures immediately following one another. Additionally, it was evaluated whether the obtained hemoglobin mass from three different CO-rebreathing devices is comparable. Fifty-five healthy participants (22 males, 23 females) performed 222 duplicate CO-rebreathing procedures in total. Additionally, in a randomized cross-over design 10 participants completed three experimental trials, each including three CO-rebreathing procedures, with the first and second separated by 24 h and the second and third separated by 5-10 min. Each trial was separated by >48 h and conducted using either a glass-spirometer, a semi-automated electromechanical device, or a standard three-way plastic valve designed for pulmonary measurements. Hemoglobin mass was 3 ± 22 g lower (<i>p</i> < 0.05) at the second measure when performed immediately after the first with a typical error of 1.1%. Carboxyhemoglobin levels reached 10.9 ± 1.3%. In the randomized trial, hemoglobin mass was similar between the glass-spirometer and three-way valve, but ∼6% (∼50 g) higher for the semi-automated device. Notably, differences in hemoglobin mass were up to ∼13% (∼100 g) when device-specific recommendations for correction of CO loss to myoglobin and exhalation was followed. In conclusion, it is feasible and reliable to perform two immediate CO-rebreathing procedures. Hemoglobin mass is comparable between the glass-spirometer and the three-way plastic valve, but higher for the semi-automated device. The differences are amplified if the device-specific recommendations of CO-loss corrections are followed.</p>","PeriodicalId":21474,"journal":{"name":"Scandinavian Journal of Clinical & Laboratory Investigation","volume":" ","pages":"1-10"},"PeriodicalIF":1.3,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139542511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A case of platelet δ-granule defect identified by decreased CD63 expression and decreased serotonin release measured by flow cytometry and liquid chromatography tandem mass spectrometry. 一例通过流式细胞仪和液相色谱串联质谱法测量 CD63 表达减少和血清素释放减少而确定的血小板 δ 颗粒缺陷病例。
IF 1.3 4区 医学
Scandinavian Journal of Clinical & Laboratory Investigation Pub Date : 2024-02-01 DOI: 10.1080/00365513.2024.2309613
Peter H Nissen, Torben Stamm Mikkelsen, Carsten Schriver Højskov, Johanne Andersen Højbjerg
{"title":"A case of platelet δ-granule defect identified by decreased CD63 expression and decreased serotonin release measured by flow cytometry and liquid chromatography tandem mass spectrometry.","authors":"Peter H Nissen, Torben Stamm Mikkelsen, Carsten Schriver Højskov, Johanne Andersen Højbjerg","doi":"10.1080/00365513.2024.2309613","DOIUrl":"10.1080/00365513.2024.2309613","url":null,"abstract":"","PeriodicalId":21474,"journal":{"name":"Scandinavian Journal of Clinical & Laboratory Investigation","volume":" ","pages":"68-70"},"PeriodicalIF":1.3,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139651628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Pre-analytical diagnostic differences despite high adherence to guidelines for gestational diabetes mellitus. 尽管高度遵守妊娠糖尿病指南,但分析前诊断仍存在差异。
IF 1.3 4区 医学
Scandinavian Journal of Clinical & Laboratory Investigation Pub Date : 2024-02-01 Epub Date: 2024-02-06 DOI: 10.1080/00365513.2024.2312152
Cathrine Scavenius, Eva Rabing Brix Petersen, Dorte Møller Jensen, Lene Ringholm, Jakoba Sevdal Danielsen, Elisabeth Reinhardt Mathiesen, David McIntyre, Peter Damm, Martin Overgaard, Tine Dalsgaard Clausen
{"title":"Pre-analytical diagnostic differences despite high adherence to guidelines for gestational diabetes mellitus.","authors":"Cathrine Scavenius, Eva Rabing Brix Petersen, Dorte Møller Jensen, Lene Ringholm, Jakoba Sevdal Danielsen, Elisabeth Reinhardt Mathiesen, David McIntyre, Peter Damm, Martin Overgaard, Tine Dalsgaard Clausen","doi":"10.1080/00365513.2024.2312152","DOIUrl":"10.1080/00365513.2024.2312152","url":null,"abstract":"<p><p>Regional variations in the prevalence of gestational diabetes mellitus (GDM) have been found across Denmark. The objectives of this exploratory survey were to evaluate adherence to the national guideline for screening and diagnosing GDM and to identify variations in pre-analytical or analytical factors, which could potentially contribute to variations in GDM prevalence across regions. In a national interview-based survey, obstetric departments and laboratories throughout Denmark handling GDM screening or diagnostic testing were invited to participate. Survey questionnaires were completed through personal interviews. In total, 21 of 22 identified obstetric departments and 44 of 45 identified laboratories participated. Adherence to guideline among obstetric departments ranged 67-100% and uniformity in laboratory procedures was high. However, the gestational age at the time of late diagnostic testing with oral glucose tolerance test (OGTT) varied considerably, with 48% (10/21) of departments testing outside the recommended 24-28 weeks' gestation. Procedural heterogeneity was most pronounced for the parts not described in current guidelines, with choice of laboratory equipment being the most diverse factor ranging 3-39% nationally. In conclusion, the overall adherence to the national guidelines was high across regions, and obstetric departments and laboratories had high uniformity in the procedures for screening and diagnosing GDM. Uniformity was generally high for procedures included in the guideline and low if not included. However, a high proportion of GDM testing was performed outside the recommended gestational window in late pregnancy, which may be a pre-analytical contributor to regional differences in GDM prevalence.</p>","PeriodicalId":21474,"journal":{"name":"Scandinavian Journal of Clinical & Laboratory Investigation","volume":" ","pages":"30-37"},"PeriodicalIF":1.3,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139692823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Abbott D-dimer assay: analytical performance and diagnostic accuracy in management of venous thromboembolism. 雅培 D-二聚体测定:静脉血栓栓塞症治疗中的分析性能和诊断准确性。
IF 1.3 4区 医学
Scandinavian Journal of Clinical & Laboratory Investigation Pub Date : 2024-02-01 Epub Date: 2024-02-16 DOI: 10.1080/00365513.2024.2318616
Ivana Lapić, Anamarija Bogić, Ivana Stojan, Dunja Rogić
{"title":"Abbott D-dimer assay: analytical performance and diagnostic accuracy in management of venous thromboembolism.","authors":"Ivana Lapić, Anamarija Bogić, Ivana Stojan, Dunja Rogić","doi":"10.1080/00365513.2024.2318616","DOIUrl":"10.1080/00365513.2024.2318616","url":null,"abstract":"<p><p>This study aimed to assess analytical characteristics and diagnostic accuracy in management of venous thromboembolism (VTE) in the Emergency Department (ED) of the Abbott D-dimer assay applied on the Alinity c clinical chemistry analyzer (Abbott Laboratories, Chicago, IL) compared to the INNOVANCE D-dimer assay (Siemens Healthineers, Marburg, Germany). Precision was determined at three concentration levels following the CLSI EP15-A3 protocol. Method comparison and diagnostic accuracy were assessed using samples obtained from 85 patients who were referred for diagnostic imaging and D-dimer testing due to clinically suspected VTE. Within-run coefficients of variation (CVs) were 3.0%, 0.5% and 0.5% at D-dimer concentrations of 0.54, 1.42 and 2.68 mg/L FEU, while respective between-run CVs were 2.0%, 3.4% and 2.7%, hence fulfilling the desirable biological variation criteria for imprecision (<12.6%). Passing-Bablok regression analysis yielded a small proportional difference between the two compared assays (<i>y</i> = 1.09 (95% confidence interval (CI): 1.01-1.18) <i>x</i> + 0.09 (95%CI: -0.09 to 0.16)), while Bland-Altman analysis showed significant negative absolute (-0.6 mg/L FEU, 95%CI: -0.9 to -0.3) and relative mean bias (-14.1%, 95%CI: -20.3 to -7.9). Spearman's <i>ρ</i> was 0.979 (95%CI: 0.967-0.986). Inter-assay agreement relative to the cut-off was 92% (kappa coefficient = 0.547 (95%CI: 0.255-0.839)). Diagnostic sensitivity, specificity, positive and negative predictive values of the Abbott assay were 100%, 9.2%, 25.3% and 100%, respectively, compared to the following data for the INNOVANCE assay: 95.0%, 15.4%, 25.7% and 90.9%. Abbott D-dimer assay has shown excellent analytical precision, high comparability with the INNOVANCE D-dimer and high NPV at manufacturer's cut-off.</p>","PeriodicalId":21474,"journal":{"name":"Scandinavian Journal of Clinical & Laboratory Investigation","volume":" ","pages":"53-61"},"PeriodicalIF":1.3,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139741931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
IgE-kappa multiple myeloma with kappa free light chain: a case report. 伴有卡帕游离轻链的 IgE 卡帕多发性骨髓瘤:一份病例报告。
IF 1.3 4区 医学
Scandinavian Journal of Clinical & Laboratory Investigation Pub Date : 2024-02-01 Epub Date: 2024-02-08 DOI: 10.1080/00365513.2024.2309611
Yuyi Hu, Wenqi Shao, Baishen Pan, Beili Wang, Wei Guo
{"title":"IgE-kappa multiple myeloma with kappa free light chain: a case report.","authors":"Yuyi Hu, Wenqi Shao, Baishen Pan, Beili Wang, Wei Guo","doi":"10.1080/00365513.2024.2309611","DOIUrl":"10.1080/00365513.2024.2309611","url":null,"abstract":"","PeriodicalId":21474,"journal":{"name":"Scandinavian Journal of Clinical & Laboratory Investigation","volume":" ","pages":"71-75"},"PeriodicalIF":1.3,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139703309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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