Comparison of the 99th percentiles of three troponin I assays in a large reference population.

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:Investigation of a 61-year-old Caucasian male suffering from fatigue and weight loss led to the finding of a carbohydrate antigen 19-9 (CA 19-9) concentration of 80 kU/L using an ADVIA Centaur analyser. Determination of CA 19-9 on Vidas, AxSYM and Architect i2000 systems gave normal results. His rheumatoid f...

journal_title：Clinical chemistry and laboratory medicine

authors： Berth M,Bosmans E,Everaert J,Dierick J,Schiettecatte J,Anckaert E,Delanghe J

更新日期：2006-01-01 00:00:00

abstract：BACKGROUND:When certain inflammatory processes occur, toxic granulation neutrophils (TGNs) appear in the blood showing prominent cytoplasmic granules. Currently, the granularity of TGNs is analyzed by manual microscopy of blood smears. The SYSMEX XE-5000 is an automated hematology analyzer, which can measure toxic gran...

journal_title：Clinical chemistry and laboratory medicine

authors： Zimmermann M,Cremer M,Hoffmann C,Weimann K,Weimann A

更新日期：2011-07-01 00:00:00

abstract：BACKGROUND:Linezolid is the first synthetic compound of a new group of antimicrobials, the oxazolidinones, which inhibit protein synthesis. It shows a broad spectrum of activity against Gram positive organisms. With respect to its pharmacokinetics, linezolid shows a relatively high volume of distribution and good penet...

journal_title：Clinical chemistry and laboratory medicine

authors： Guerrero L,Martínez-Olondris P,Rigol M,Esperatti M,Esquinas C,Luque N,Piñer R,Torres A,Soy D

更新日期：2010-03-01 00:00:00

abstract：BACKGROUND:Pneumatic tube transport of blood samples reduces turnaround times and labour. However, the preanalytical effects on new clinical chemistry parameters and instruments are not fully known. The aim of this study was to evaluate the effect of pneumatic tube transport on haematology and coagulation parameters, i...

journal_title：Clinical chemistry and laboratory medicine

authors： Wallin O,Söderberg J,Grankvist K,Jonsson PA,Hultdin J

更新日期：2008-01-01 00:00:00

abstract：BACKGROUND:There are several complementary English-language guidelines for the performance of the sweat chloride test. These guidelines also incorporate information for the collection of conductivity samples. However, recommendations for the measurement and reporting of sweat conductivity are less clear than for sweat ...

journal_title：Clinical chemistry and laboratory medicine

authors： Greaves RF,Jolly L,Massie J,Scott S,Wiley VC,Metz MP,Mackay RJ,Australasian Association of Clinical Biochemists Sweat Test Working Party in association with the Royal Australasian College of Pathologists Quality Assurance Programs.

更新日期：2018-03-28 00:00:00

abstract：BACKGROUND:Faecal immunochemical tests (FIT) are becoming widely used in colorectal cancer (CRC) screening. Availability of data on faecal haemoglobin concentrations (f-Hb) in three countries prompted an observational study on sex and age and the transferability of data across geography. METHODS:Single estimates of f-...

journal_title：Clinical chemistry and laboratory medicine

authors： Fraser CG,Rubeca T,Rapi S,Chen LS,Chen HH

更新日期：2014-08-01 00:00:00

abstract：:Historical research on the concept of normality, its roots and its development show that this concept has its sources in very different areas of scientific and medical thinking. Of great importance were: (i) a new theory of disease arising early in the 19th century supposing a continuous change from the healthy to the...

journal_title：Clinical chemistry and laboratory medicine

authors： Büttner J

更新日期：1998-01-01 00:00:00

abstract：:Until recently, the "human genome" programs were mainly directed towards the development of maps to identify disease genes. The genetic map comprises about 8000 highly informative second generation markers of the microsatellite type. The density of markers is now sufficient to localize a gene for a monogenic disease w...

journal_title：Clinical chemistry and laboratory medicine

authors： Weissenbach J

更新日期：1998-08-01 00:00:00

abstract：BACKGROUND:The handling of cerebrospinal fluid (CSF) affects the biomarker quantification used to diagnose Alzheimer's disease (AD). Only specialized centers can test for AD markers. The precise timing and freezing is required to correctly measure these biomarkers. Therefore, the effects of CSF storage temperature and ...

journal_title：Clinical chemistry and laboratory medicine

authors： Klener J,Hofbauerová K,Bartoš A,Ríčný J,Rípová D,Kopecký V

更新日期：2014-05-01 00:00:00

abstract：:We developed a time-resolved-fluoro-immunoassay to measure cortisol binding globulin (CBG) in serum. It is a microtitre plate, solid phase, reagent excess, sandwich assay in which the same polyclonal antiserum is used as a source of capture and labeled antibodies. The results of this assay were shown to be reliable an...

journal_title：Clinical chemistry and laboratory medicine

authors： Bonte HA,van den Hoven RJ,van der Sluijs Veer G,Vermes I

更新日期：1999-02-01 00:00:00

abstract：BACKGROUND:The Enhanced Liver Fibrosis (ELF) score combining serum hyaluronan, N-terminal peptide of type III procollagen and tissue inhibitor of metalloproteinase-1, was reported as relevant in predicting liver fibrosis in chronic liver disease and proposed as an alternative to liver biopsy. METHODS:We evaluated the ...

journal_title：Clinical chemistry and laboratory medicine

authors： Guéchot J,Trocmé C,Renversez JC,Sturm N,Zarski JP,ANRS HC EP 23 Fibrostar Study Group.

更新日期：2012-01-13 00:00:00

abstract：BACKGROUND:Paraoxonases (PON) are members of an enzyme family involved in preventing low-density lipoprotein oxidation and therefore protecting against atherosclerotic plaque formation. METHODS:We studied the Met55Leu and Gln192Arg PON1 polymorphisms in 712 patients (437 Caucasian- and 275 African-Brazilians) who unde...

journal_title：Clinical chemistry and laboratory medicine

authors： Rios DL,D'Onofrio LO,Cerqueira CC,Bonfim-Silva R,Carvalho HG,Santos-Filho A,Galvão-Castro B

更新日期：2007-01-01 00:00:00

abstract：:Folate measurements, particularly for whole blood, show wide inter-laboratory and inter-methodology variability. This variability appears to be due in part to the lack of internationally accepted reference materials. A whole blood haemolysate, lyophilised in ampoules and designated 95/528, was therefore evaluated by 1...

journal_title：Clinical chemistry and laboratory medicine

authors： Thorpe SJ,Sands D,Heath AB,Hamilton MS,Blackmore S,Barrowcliffe T

更新日期：2004-05-01 00:00:00

abstract：BACKGROUND:Non-invasive biochemical markers are needed to support the diagnosis of ulcerative colitis (UC), an incurable disease of unknown pathology. Midkine is an angiogenic cytokine, chemotactic towards neutrophils and macrophages, and a T-regulatory cell suppressor. METHODS:Serum midkine was measured immunoenzymat...

journal_title：Clinical chemistry and laboratory medicine

authors： Krzystek-Korpacka M,Neubauer K,Matusiewicz M

更新日期：2009-01-01 00:00:00

abstract：BACKGROUND:The aim of this study was to provide inter-laboratory imprecision comparisons of different groups of diagnostic systems as well as a comparison of professional laboratories with medical offices performance on the basis of 88,429 glucose results obtained in external quality assessment (EQA) schemes organized ...

journal_title：Clinical chemistry and laboratory medicine

authors： Morandi PA,Deom A,Kesseler D,Cohen R

更新日期：2010-09-01 00:00:00

abstract：:Advanced age-related macular degeneration (AAMD) is a complex sight-threating disease of public health significance. Micro RNAs (miRNAs) have been proposed as biomarkers for AAMD. The presence of certain single nucleotide polymorphisms (SNPs) may influence the explanatory value of these biomarkers. Here we present fin...

journal_title：Clinical chemistry and laboratory medicine

authors： SanGiovanni JP,SanGiovanni PM,Sapieha P,De Guire V

更新日期：2017-05-01 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:High-density lipoprotein (HDL) is believed to be protective against coronary heart disease (CHD). HDL is comprised of different subfractions. Of these, HDL 2b is believed to be the most important in preventing CHD. Current methods for HDL subfraction measurements are not standardized and often exhibit poor a...

journal_title：Clinical chemistry and laboratory medicine

authors： Yang DH,Konigshofer Y,Dike J,Chang E,Mueller O

更新日期：2010-06-01 00:00:00

abstract：BACKGROUND:Validation of blood collection tubes are important to determine the role of different collection tubes which influence the assurance of laboratory results. We compared two different tubes (Improvacuter™ and Becton Dickinson [BD] Vacutainer™) and investigated the effect of gel and storage time in comparison w...

journal_title：Clinical chemistry and laboratory medicine

authors： Zungun C,Yılmaz FM,Boru EG,Topcuoglu C

更新日期：2015-02-01 00:00:00

abstract：BACKGROUND:The objective of the study was to find the incidence of hemolysis in samples transported through a pneumatic tube system (PTS) at different speeds. METHODS:This prospective observational study was done in three phases: "short distance and high speed (115 m at 3 m/s)", "long distance and high speed (225 m at...

journal_title：Clinical chemistry and laboratory medicine

authors： Tiwari AK,Pandey P,Dixit S,Raina V

更新日期：2011-11-10 00:00:00

abstract：BACKGROUND:Heparin is the standard drug for anticoagulation treatment and is used in many cardiac surgical interventions to prevent blood clotting. The anticoagulation status is controlled by various clotting tests. However, these tests depend on parameters like temperature, hemodilution etc. and are thus not applicabl...

journal_title：Clinical chemistry and laboratory medicine

authors： Haselbach S,Maurer J,Vogel V,Harder S,Weber CF,Baykut D,Meininger D,Keller H,Moritz A,Mäntele W

更新日期：2013-10-01 00:00:00

abstract：:Asymmetric dimethylarginine (ADMA) is a potent inhibitor of nitric oxide synthase and is regarded as a novel risk factor for cardiovascular disease. The metabolic pathways of ADMA and homocysteine are strongly intertwined. First, during synthesis of ADMA, two equivalents of homocysteine are formed. Second, homocystein...

journal_title：Clinical chemistry and laboratory medicine

authors： Teerlink T

更新日期：2005-01-01 00:00:00

abstract：BACKGROUND:Autoantibodies against β1-adrenergic receptors (β1AR) that stimulate cardiac cAMP-production play a causal role in the pathogenesis of human heart failure. Patients can be subjected to specific therapies, if the presence of potentially cardio-noxious β1AR-autoantibodies is reliably diagnosed. This requires a...

journal_title：Clinical chemistry and laboratory medicine

authors： Bornholz B,Benninghaus T,Reinke Y,Felix SB,Roggenbuck D,Jahns-Boivin V,Jahns R,Boege F

更新日期：2016-04-01 00:00:00

abstract：BACKGROUND:Efficient laboratory service is the cornerstone of modern health care systems. Scientific innovations have contributed to substantial improvements in the field of laboratory science, but errors still prevail. These errors are classified as preanalytical, analytical and postanalytical, depending upon the time...

journal_title：Clinical chemistry and laboratory medicine

authors： Goswami B,Singh B,Chawla R,Mallika V

更新日期：2010-01-01 00:00:00

abstract：:Choroid plexus has the highest concentration of transthyretin (TTR) mRNA in the body, 4.4 microg TTR mRNA/g wet weight tissue, compared with 0.39 microg in the liver. The proportion of TTR to total protein synthesis in choroid plexus is 12%. All newly synthesized TTR is secreted towards the ventricles. Net transfer of...

journal_title：Clinical chemistry and laboratory medicine

authors： Schreiber G

更新日期：2002-12-01 00:00:00

abstract：BACKGROUND:The plasma total and low-density lipoprotein-cholesterol (LDL-C) levels that are used as diagnostic criteria for familial hypercholesterolaemia (FH) probands in the general population are too stringent for use in relatives, given the higher prior probability of a first-degree relative being FH (50% vs. 1/500...

journal_title：Clinical chemistry and laboratory medicine

authors： Starr B,Hadfield SG,Hutten BA,Lansberg PJ,Leren TP,Damgaard D,Neil HA,Humphries SE

更新日期：2008-01-01 00:00:00

abstract：:Background Aberrant kallikrein activity is observed in a number of inflammatory dermatoses. Up-regulation of kallikrein-5 (KLK5) activity leads to uncontrolled skin desquamation and cleavage of proteinase-activated receptor-2 (PAR2), causing the release of pro-inflammatory cytokines and disruption of epidermal barrier...

journal_title：Clinical chemistry and laboratory medicine

authors： Di Paolo CT,Filippou PS,Yu Y,Poda G,Diamandis EP,Prassas I

更新日期：2019-10-25 00:00:00

abstract：:Surface-enhanced laser desorption time of flight mass spectrometry (SELDI-TOF-MS) is an important proteomic technology that is immediately available for the high throughput analysis of complex protein samples. Over the last few years, several studies have demonstrated that comparative protein profiling using SELDI-TOF...

journal_title：Clinical chemistry and laboratory medicine

authors： Kiehntopf M,Siegmund R,Deufel T

更新日期：2007-01-01 00:00:00

abstract：BACKGROUND:Electrospray ionization mass spectrometry (ESI-MS) can be used for the measurement of glycated adult hemoglobin. Here, we describe the evaluation of ESI-MS for measurement of glycated (GHbF) and acetylated (AcHbF) fetal hemoglobin and the identification by mass of different chains of fetal hemoglobin. METHO...

journal_title：Clinical chemistry and laboratory medicine

authors： Davison AS,Green BN,Roberts NB

更新日期：2008-01-01 00:00:00