Evaluation of errors in a clinical laboratory: a one-year experience.

abstract：BACKGROUND:The new swine influenza (H1N1) requires fast and accurate diagnosis. Currently, there are few reports about the diagnostic performance of influenza antigen tests with regard to the H1N1 virus infection. We evaluated the reactivity of eight commercially available rapid antigen tests in samples from confirmed ...

journal_title：Clinical chemistry and laboratory medicine

authors： Herzum I,Lutz T,Koch F,Geisel R,Gehrt A

更新日期：2010-01-01 00:00:00

abstract：:Although controversial, data on the genetic polymorphism of apoprotein E (APOE), methylenetetrahydrofolate (MTHFR) and paraoxonase (PON1) genes implicate their role in the development of cerebrovascular disease. The aim of this study was to assess the association of polymorphism of APOE, MTHFR and PON1 genes in 56 str...

journal_title：Clinical chemistry and laboratory medicine

authors： Topić E,Simundić AM,Ttefanović M,Demarin V,Vuković V,Lovrencić-Huzjan A,Zuntar I

更新日期：2001-04-01 00:00:00

abstract：:Human C-reactive protein is a Ca2+-binding acute phase-protein with binding specificity for phosphocholine. Recent crystallographic and mutagenesis studies have provided a solid understanding of the structural biology of the protein, while experiments using transgenic mice have confirmed its host-defense function. The...

journal_title：Clinical chemistry and laboratory medicine

authors： Szalai AJ,Agrawal A,Greenhough TJ,Volanakis JE

更新日期：1999-03-01 00:00:00

abstract：BACKGROUND:Cystatin C (CST3), a strong inhibitor of cysteine proteinases, is freely filtered by the kidney glomerulus and is reabsorbed by the tubules, where it is almost totally catabolized, with the remainder then eliminated in urine. In tubular diseases, it seems sensible to postulate that CST3 degradation would be ...

journal_title：Clinical chemistry and laboratory medicine

authors： Conti M,Moutereau S,Zater M,Lallali K,Durrbach A,Manivet P,Eschwège P,Loric S

更新日期：2006-01-01 00:00:00

abstract：BACKGROUND:We report a Dutch-Belgian multicentre evaluation of the Tosoh HLC-723G8 glycohaemoglobin analyser, an ion-exchange HPLC instrument for the separation and quantification of haemoglobin A1c (HbA1c) in whole blood. METHODS:We evaluated the analytical performances of the Tosoh G8 analyser and compared the resul...

journal_title：Clinical chemistry and laboratory medicine

authors： Chapelle JP,Teixeira J,Maisin D,Assink H,Barla G,Stroobants AK,Delzenne B,van den Eshof W

更新日期：2010-03-01 00:00:00

abstract：BACKGROUND:Matrix metalloproteinases (MMPs), especially MMP-2 and MMP-9, play an important role in tumor invasion and metastasis. This study aimed to determine the serum levels of MMP-2, MMP-9, 130- and 225-kDa gelatinolytic bands and conventional tumor markers, carcinoembryonic antigen (CEA) and cancer antigen (CA) 19...

journal_title：Clinical chemistry and laboratory medicine

authors： Emara M,Cheung PY,Grabowski K,Sawicki G,Wozniak M

更新日期：2009-01-01 00:00:00

abstract：:Gastric juice is known to have phospholipase A2 catalytic activity. Helicobacter pylori (H. pylori) has been reported to produce phospholipase A2, which is believed to hydrolyse the protective layer of gastric mucosal phospholipids and to promote mucosal damage. The current study aimed at identifying secretory phospho...

journal_title：Clinical chemistry and laboratory medicine

authors： Huhtinen HT,Grönroos JM,Haapamäki MM,Nevalainen TJ

更新日期：1999-01-01 00:00:00

abstract：:Chronic rejection accounts for the greatest loss of renal allografts. HLA mismatching has been minimised by organ allocation and new immunosuppressive drugs have been employed, but the average cadaveric graft survival still does not exceed 12 years. Though the aetiology is multifactorial, one contributory factor for t...

journal_title：Clinical chemistry and laboratory medicine

authors： Gerstenkorn C,Robertson H,Mohamed MA,O'Donnell M,Ali S,Talbot D

更新日期：2000-11-01 00:00:00

abstract：:Recent studies demonstrated that large amounts of the pro-hormone peptide of brain natriuretic peptide (proBNP) can be detected in plasma of healthy subjects and in particular of patients with heart failure. As a result, a great part of B-type natriuretic peptides measured in patients with cardio-vascular disease may ...

journal_title：Clinical chemistry and laboratory medicine

authors： Clerico A,Vittorini S,Passino C

更新日期：2011-08-26 00:00:00

abstract：BACKGROUND:An effective quality control (QC) program requires the establishment of control limits within which the results of the QC sample is expected to fall. Traditionally, the mean plus/minus two standard deviations calculated for a set of QC sample results is used to establish control limits. Allowable total error...

journal_title：Clinical chemistry and laboratory medicine

authors： Dimech W,Vincini G,Karakaltsas M

更新日期：2015-02-01 00:00:00

abstract：:Since serum and plasma D-dimer concentrations correlate very well, we evaluated the comparability of other haemostasis activation markers in plasma and serum. Prothrombin fragment F1+2, fibrin monomer and D-dimer concentrations were measured with commercially available immunoassays in serum and plasma. Serum to plasma...

journal_title：Clinical chemistry and laboratory medicine

authors： Korte W,Riesen WF

更新日期：2001-07-01 00:00:00

abstract：BACKGROUND:The basic helix-loop-helix transcription factor HAND1 is essential for cardiac development and structural remodeling, and mutations in HAND1 have been causally linked to various congenital heart diseases. However, whether genetically compromised HAND1 predisposes to dilated cardiomyopathy (DCM) in humans rem...

journal_title：Clinical chemistry and laboratory medicine

authors： Zhou YM,Dai XY,Qiu XB,Yuan F,Li RG,Xu YJ,Qu XK,Huang RT,Xue S,Yang YQ

更新日期：2016-07-01 00:00:00

abstract：BACKGROUND:The long noncoding RNAs (lncRNAs) have gradually been reported to be an important class of RNAs with pivotal roles in regulation of gene expression, and thus are involved in multitudinous human complex diseases. However, the biological functions and precise mechanisms of the majority of lncRNAs are still poo...

journal_title：Clinical chemistry and laboratory medicine

authors： Zhuo Y,Zeng Q,Zhang P,Li G,Xie Q,Cheng Y

更新日期：2017-01-01 00:00:00

abstract：BACKGROUND:Recent studies show that platelets have important roles in the immune system. Little is known about the clinical significance of platelet indices. Changes in platelet indices, including platelet distribution width (PDW), mean platelet volume (MPV) and plateletcrit, in pulmonary tuberculosis were investigated...

journal_title：Clinical chemistry and laboratory medicine

authors： Tozkoparan E,Deniz O,Ucar E,Bilgic H,Ekiz K

更新日期：2007-01-01 00:00:00

abstract：BACKGROUND:Stone composition has changed substantially over the past decades in developed countries. We studied urinary stone composition in Tunisian children. METHODS:We studied 205 children ranging from 3 months to 16 years old age and who were diagnosed as having urinary stones (122 boys and 83 girls). Stone analys...

journal_title：Clinical chemistry and laboratory medicine

authors： Alaya A,Nouri A,Najjar MF

更新日期：2011-02-01 00:00:00

abstract：:Cryoglobulins are proteins that precipitate at temperatures below 37 degrees C. Cold-induced precipitation of proteins may occur in vivo secondary to several important diseases, and lead to pathological manifestations involving different organs. Cryoprecipitation may be observed in vitro by exposing serum samples, sup...

journal_title：Clinical chemistry and laboratory medicine

authors： Di Stasio E,Bizzarri P,Bove M,Casato M,Giardina B,Fiorilli M,Galtieri A,Pucillo LP

更新日期：2003-02-01 00:00:00

abstract：BACKGROUND:Knowledge of the fatty acid composition of lipid classes in human plasma is an important factor in the investigation of human metabolism. Therefore, a method for the analysis of neutral lipid (NL), phospholipid (PL) and free fatty acids (FFA) in human plasma has been developed and validated. METHODS:Separat...

journal_title：Clinical chemistry and laboratory medicine

authors： Firl N,Kienberger H,Hauser T,Rychlik M

更新日期：2013-04-01 00:00:00

abstract：BACKGROUND:The clinical relevance of chromogranin A (CgA) concentrations depends on the analytical performance of the assay. The goal of the present study was to define the clinical involvements in CgA calibration models by evaluating the confidence intervals (CIs) for values from patients who were undergoing monitorin...

journal_title：Clinical chemistry and laboratory medicine

authors： Ferraro S,Marano G,Ciardi L,Vendramin C,Bongo AS,Bellomo G,Boracchi P,Biganzoli EM

更新日期：2009-01-01 00:00:00

abstract：BACKGROUND:Iodine requirements increase during pregnancy and previous studies have reported the inadequate iodine status of pregnant women in areas that have achieved iodine sufficiency in the general population. We examined the urinary iodine (UI) concentrations of pregnant women in Ukraine, where the iodine status is...

journal_title：Clinical chemistry and laboratory medicine

authors： Sekitani Y,Hayashida N,Takahashi J,Kozlovsky AA,Rudnitskiy S,Petrova A,Gutevych OK,Chorniy SA,Yamashita S,Takamura N

更新日期：2013-04-01 00:00:00

abstract：:Biochemical reactions in cells which involve oxalic acid are described. It is shown that this compound is required for the formation of uracil and orotic acid. The former is a component of RNA which is common to all cells in the human metabolism. On the basis of the biochemical reactions described a possible treatment...

journal_title：Clinical chemistry and laboratory medicine

authors： Robertson DS

更新日期：2011-09-01 00:00:00

abstract：BACKGROUND:Cholesterol homeostasis disorders may cause dyslipidemia, atherosclerosis progression and coronary artery disease (CAD) development. Evaluation of non-cholesterol sterols (NCSs) as synthesis and absorption markers, and lipoprotein particles quality may indicate the dyslipidemia early development. This study ...

journal_title：Clinical chemistry and laboratory medicine

authors： Gojkovic T,Vladimirov S,Spasojevic-Kalimanovska V,Zeljkovic A,Vekic J,Kalimanovska-Ostric D,Djuricic I,Sobajic S,Jelic-Ivanovic Z

更新日期：2017-03-01 00:00:00

abstract：BACKGROUND:Lens culinaris agglutinin-reactive α-fetoprotein (AFP-L3) and des-γ-carboxy prothrombin (DCP) have been routinely used as serological tumor markers of hepatocellular carcinoma (HCC) for surveillance. The aims of this study were: (i) to determine the biological variation of AFP-L3 and DCP in patients with chr...

journal_title：Clinical chemistry and laboratory medicine

authors： Kanke F,Kumada T,Toyoda H,Satomura S

更新日期：2012-03-06 00:00:00

abstract：:The soluble transferrin receptor (sTfR) distinguishes iron deficiency anemia from other types of anemia. Refractory iron deficiency anemia is often the onset symptom in malabsorption-induced celiac disease. We evaluated whether sTfR levels distinguish celiac disease-associated iron deficiency anemia from iron deficien...

journal_title：Clinical chemistry and laboratory medicine

authors： De Caterina M,Grimaldi E,Di Pascale G,Salerno G,Rosiello A,Passaretti M,Scopacasa F

更新日期：2005-01-01 00:00:00

abstract：:The erythrocyte sedimentation rate (ESR), now more appropriately referred to as the "length of sedimentation reaction in blood (LSRB)", remains the most widely used laboratory test for monitoring the course of infections, inflammatory diseases and some types of cancer. Thanks to the several recently developed methods ...

journal_title：Clinical chemistry and laboratory medicine

authors： Piva E,Fassina P,Plebani M

更新日期：2002-07-01 00:00:00

abstract：BACKGROUND:In large clinical trials, where RNA cannot be extracted immediately after sampling, preserving RNA in whole blood is a crucial initial step in obtaining robust qPCR data. The current golden standard for RNA preservation is costly and designed for time-consuming column-based RNA-extraction. We investigated th...

journal_title：Clinical chemistry and laboratory medicine

authors： Mærkedahl RB,Frøkiær H,Lauritzen L,Metzdorff SB

更新日期：2015-07-01 00:00:00

abstract：BACKGROUND:The measurement of serum IgE aids in the diagnosis and management of atopic allergic disease and hyper-IgE immunodeficiency syndromes. The 2nd World Health Organization (WHO) International Reference Reagent (IRR) for serum IgE (75/502; 5000 IU/ampoule), is widely used to calibrate assays for serum IgE. Exhau...

journal_title：Clinical chemistry and laboratory medicine

authors： Thorpe SJ,Heath A,Fox B,Patel D,Egner W

更新日期：2014-09-01 00:00:00

abstract：BACKGROUND:Recently published data identified bone-specific alkaline phosphatase (BALP) as a good marker of bone formation in different bone diseases and osteoporosis. Two methods are available for BALP determination: one measures enzyme activity, the other its mass concentration. We compared results for BALP activity ...

journal_title：Clinical chemistry and laboratory medicine

authors： Avbersek-Luznik I,Gmeiner Stopar T,Marc J

更新日期：2007-01-01 00:00:00

abstract：BACKGROUND:External quality assessment/proficiency test (EQA/PT) organizers play an important role in monitoring the performance of HbA1c measurements. With increasing quality of the assays, HbA1c is increasingly used for diagnosis of diabetes and the demands on EQA/PT organizers themselves are rising constantly. EQA o...

journal_title：Clinical chemistry and laboratory medicine

authors： Kaiser P,Spannagl M,van Campenhout C,Lenga Y,Siebelder C,Weykamp C

更新日期：2016-11-01 00:00:00

abstract：BACKGROUND:International recommendations highlight the superior value of cardiac troponins (cTns) for early diagnosis of myocardial infarction along with analytical requirements of improved precision and detectability. In this multicenter study, we investigated the analytical performance of a new high sensitive cardiac...

journal_title：Clinical chemistry and laboratory medicine

authors： Krintus M,Kozinski M,Boudry P,Capell NE,Köller U,Lackner K,Lefèvre G,Lennartz L,Lotz J,Herranz AM,Nybo M,Plebani M,Sandberg MB,Schratzberger W,Shih J,Skadberg Ø,Chargui AT,Zaninotto M,Sypniewska G

更新日期：2014-11-01 00:00:00

abstract：BACKGROUND:We verified the analytical performance of strip-based handheld glucose meters (GM) for prescription use, in a comparative split-sample protocol using blood gas samples from a surgical intensive care unit (ICU). METHODS:Freestyle Precision Pro (Abbott), StatStrip Connectivity Meter (Nova), ACCU-CHEK Inform I...

journal_title：Clinical chemistry and laboratory medicine

authors： Claerhout H,De Prins M,Mesotten D,Van den Berghe G,Mathieu C,Van Eldere J,Vanstapel F

更新日期：2016-01-01 00:00:00