abstract：Objectives:Monoclonal immunoglobulins can cause interference in many laboratory analyses. During a 4 month period we observed seven patients with monoclonal disease and falsely extremely elevated 25-hydroxyvitamin D (25(OH)D) results above 160 ng/mL (>400 nmol/L) measured using an immunoassay from Abbott Diagnostics. B...

journal_title：Clinical chemistry and laboratory medicine

authors： Hager HB,Bolstad N,Warren DJ,Ness MV,Seierstad B,Lindberg M

更新日期：2020-10-29 00:00:00

abstract：Objectives:Matrix differences among serum samples from non-pregnant and pregnant patients could bias measurements. Standard Reference Material 1949, Frozen Human Prenatal Serum, was developed to provide a quality assurance material for the measurement of hormones and nutritional elements throughout pregnancy. Methods:...

journal_title：Clinical chemistry and laboratory medicine

authors： Boggs ASP,Kilpatrick LE,Burdette CQ,Tevis DS,Fultz ZA,Nelson MA,Jarrett JM,Kemp JV,Singh RJ,Grebe SKG,Wise SA,Kassim BL,Long SE

更新日期：2020-10-26 00:00:00

abstract：:Objectives Cerebrospinal fluid (CSF) is a clear, colorless body fluid filling the central nervous system. The determination of the CSF total protein (TP) content represents an important screening test of various pathologies. We aimed to address the effect of sex and age on CSF-TP content and the use of the current upp...

journal_title：Clinical chemistry and laboratory medicine

authors： Castellazzi M,Pizzicotti S,Lombardo I,Alfiero S,Morotti A,Pellegatti P,Negri G,Natali L,Ferri C,Fainardi E,Bellini T,Pugliatti M

更新日期：2020-10-25 00:00:00

abstract：Objectives:The utilization of reliable quality indicators (QIs) proven to be suitable for monitoring and improvement tools is one of the best choices to minimize of the risk of errors in all laboratory processes called as total testing process (TTP). In 2008, a Working Group "Laboratory Errors and Patient Safety" (WG-L...

journal_title：Clinical chemistry and laboratory medicine

authors： Orhan B,Sonmez D,Cubukcu HC,Zengi O,Ozturk Emre H,Cinaroglu I,Keles M,Gumus A,Coskun C

更新日期：2020-10-20 00:00:00

abstract：:Background Patients with cystic fibrosis (CF) have a reduced intestinal absorption of cholesterol and in a preliminary study we observed differences in plasma sterol profile between patients with pancreatic sufficiency (PS) and those with pancreatic insufficiency (PI). Therefore, we hypothesized that the sterol analys...

journal_title：Clinical chemistry and laboratory medicine

authors： Gelzo M,Iacotucci P,Sica C,Liguori R,Comegna M,Carnovale V,Dello Russo A,Corso G,Castaldo G

更新日期：2020-09-25 00:00:00

abstract：:Objectives Our recent survey of 44 mass spectrometry laboratories across 17 countries identified variation in internal standard (IS) choice for the measurement of serum/plasma 17α-hydroxyprogesterone (17OHP) by liquid chromatography-tandem mass spectrometry (LC-MS/MS). The choice of IS may contribute to inter-method v...

journal_title：Clinical chemistry and laboratory medicine

authors： Loh TP,Ho CS,Hartmann MF,Zakaria R,Lo CWS,van den Berg S,de Rijke YB,Cooke BR,Hoad K,Graham P,Davies SR,Mackay LG,Wudy SA,Greaves RF

更新日期：2020-09-25 00:00:00

abstract：:Drug-induced cardiotoxicity is a major clinical problem; cardiotoxic drugs may induce both cardiac dysfunction and myocardial injury. Several recent studies reported that cardiac troponins measured with high-sensitivity methods (hs-cTn) can enable the early detection of myocardial injury related to chemotherapy or abu...

journal_title：Clinical chemistry and laboratory medicine

authors： Cardinale DM,Zaninotto M,Cipolla CM,Passino C,Plebani M,Clerico A

更新日期：2020-08-26 00:00:00

abstract：Objectives:External quality assessment schemes (EQAS) are being established worldwide to support the faecal immunochemical test (FIT) for haemoglobin (Hb). FIT is widely used as a screening test for colorectal cancer and increasingly in assessment of patients presenting with symptoms. EQA for FIT is provided in several...

journal_title：Clinical chemistry and laboratory medicine

authors： O'Driscoll S,Piggott C,Bruce H,Benton SC

更新日期：2020-08-07 00:00:00

abstract：:Background The accurate and precise measurement of triglycerides is important due to the adverse effects associated with hypertriglyceridaemia. Most laboratory methods are based on enzymatic hydrolysis of triglycerides with measurement of the total glycerol. An elevated free glycerol concentration may result in overes...

journal_title：Clinical chemistry and laboratory medicine

authors： van Heerden C,Magwete A,Mabuza D

更新日期：2020-07-28 00:00:00

abstract：:Background Investigation of hemostasis is problematic when patients are on anticoagulant therapy. Rivaroxaban especially causes substantial interference, extending many clot-based tests, thereby leading to false positive or negative events. In particular, rivaroxaban affects some assays for activated protein C resista...

journal_title：Clinical chemistry and laboratory medicine

authors： Favaloro EJ,Gilmore G,Bonar R,Dean E,Arunachalam S,Mohammed S,Baker R

更新日期：2020-07-28 00:00:00

abstract：Objectives:Colorectal cancer (CRC) screening using stool samples is now in routine use where tumor DNA methylation analysis for leading markers such as NDRG4 and SDC2 is an integral part of the test. However, processing stool samples for reproducible and efficient extraction of human genomic DNA remains a bottleneck fo...

journal_title：Clinical chemistry and laboratory medicine

authors： Jin S,Ye Q,Hong Y,Dai W,Zhang C,Liu W,Guo Y,Zhu D,Zhang Z,Chen S,Wang Y,Li D,Ma W,Yang Z,Li J,Zheng Z,Luan J,Wu X,Jiang F,Xu C,Ding C

更新日期：2020-07-16 00:00:00

abstract：Objectives:The outbreak of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has rapidly spread globally. The laboratory diagnosis of SARS-CoV-2 infection has relied on nucleic acid testing; however, it has some limitations, such as low throughput and high rates of false negatives. Tests of higher sensitivit...

journal_title：Clinical chemistry and laboratory medicine

authors： Qian C,Zhou M,Cheng F,Lin X,Gong Y,Xie X,Li P,Li Z,Zhang P,Liu Z,Hu F,Wang Y,Li Q,Zhu Y,Duan G,Xing Y,Song H,Xu W,Liu BF,Xia F

更新日期：2020-07-15 00:00:00

abstract：:Introduction Element-tagged immunoassay coupled with inductively coupled plasma-mass spectrometry (ICP-MS) detection has the potential to revolutionize immunoassay analysis in clinical detection; however, a systematic evaluation with the standard guidelines of the assay is needed to ensure its performance meets the re...

journal_title：Clinical chemistry and laboratory medicine

authors： Jiang W,Sun G,Wen X,Men S,Cui W,Jing M,Jia X,Hu Z,Pu D,Zhang S,Yuan X,Liu X,Zhang X,Wang C

更新日期：2020-06-25 00:00:00

abstract：:Background While quantitation methods for small-molecule and tryptic peptide bottom-up mass spectrometry (MS) have been well defined, quantitation methods for top-down or middle-up MS approaches have not been as well defined. Therapeutic monoclonal antibodies (t-mAbs) are a group of proteins that can be used to both d...

journal_title：Clinical chemistry and laboratory medicine

authors： Cradic KW,Ladwig PM,Rivard AL,Katrangi W,Wintgens KF,Willrich MAV

更新日期：2020-06-25 00:00:00

abstract：:Complexity, cost, and content are three important factors that can impede translation of clinical protein mass spectrometry (MS) tests at a larger scale. Complexity stems from the many components/steps involved in bottom-up protein MS workflows, making them significantly more complicated than enzymatic immunoassays (E...

journal_title：Clinical chemistry and laboratory medicine

authors： Nedelkov D,Hu Y

更新日期：2020-06-25 00:00:00

abstract：:Background Liquid chromatography-tandem mass spectrometry (LC-MS/MS) offers advantages over immunoassay due to its increased specificity and ability to multiplex metabolites within a single run. Wide scale adoption of LC-MS/MS in routine clinical laboratories is restricted in part due to the high level of technical ex...

journal_title：Clinical chemistry and laboratory medicine

authors： Benton SC,Tetteh GK,Needham SJ,Mücke J,Sheppard L,Alderson S,Ruppen C,Curti M,Redondo M,Milan AM

更新日期：2020-06-25 00:00:00

abstract：:An outbreak of the so-called Coronavirus disease 2019 (COVID-19), caused by the severe acute respiratory syndrome Coronavirus 2 (SARS-CoV-2), has been spreading rapidly nationwide in China since December 2019. Wuhan, Hubei Province, is the hardest-hit region, with a rise in confirmed cases and its hospitals overwhelme...

journal_title：Clinical chemistry and laboratory medicine

authors： Yusong L,Duanliang P,Jia Y,Dunyan C,Hongbing J,Siyuan Y,Huanhuan C,Juan Z,Lyurong L

更新日期：2020-06-25 00:00:00

abstract：:In view of the role of pharmacotherapy in medicine, on the one hand, and the powerful technical possibilities that are now available on the other hand, therapeutic drug monitoring is a surprisingly neglected area of laboratory medicine. In this viewpoint article, an "omics approach" to pharmacovigilance and drug monit...

journal_title：Clinical chemistry and laboratory medicine

authors： Vogeser M

更新日期：2020-05-05 00:00:00

abstract：:Background Quantification of plasma amino acids is key to the diagnosis of inherited defects of amino acid synthesis, catabolism and transport, many of which present as clinical emergencies. The utility of this test is limited by the long analysis time and subsequent inability of laboratories to provide results in rea...

journal_title：Clinical chemistry and laboratory medicine

authors： Carling RS,John K,Churchus R,Turner C,Dalton RN

更新日期：2020-04-28 00:00:00

abstract：Background:Anti-mitochondrial autoantibodies (AMA) detected by indirect immunofluorescence (IIF) on rodent tissues are the diagnostic marker of primary biliary cholangitis (PBC). However, up to 15% of patients with PBC are AMA-negative by IIF. In the effort to close the serological gap and improve the diagnostic sensit...

journal_title：Clinical chemistry and laboratory medicine

authors： Villalta D,Seaman A,Tiongson M,Warren C,Bentow C,Bizzaro N,Alessio MG,Porcelli B,Norman GL,Mahler M

更新日期：2020-04-10 00:00:00

abstract：:Background Direct oral anticoagulants (DOACs) may cause false results of activated protein C resistance (APC-R) ratio. DOAC-Remove, a new reagent based on activated carbon, has been designed to eliminate the interference of DOACs on coagulation assays. The aim of the study was to investigate whether the use of DOAC-Re...

journal_title：Clinical chemistry and laboratory medicine

authors： Kopytek M,Ząbczyk M,Malinowski KP,Undas A,Natorska J

更新日期：2020-02-25 00:00:00

abstract：:Background Systemic sclerosis (SSc) and primary biliary cholangitis (PBC) are autoimmune diseases that may occur concomitantly and are both strongly associated with disease-specific autoantibodies. This study investigated the prevalence and fine specificity of PBC-specific serology (PBC-Ab) and associations with the S...

journal_title：Clinical chemistry and laboratory medicine

authors： Florin L,Rubben K,Vanhaecke A,Devreese K,De Keyser F,Smith V,Bonroy C

更新日期：2020-02-25 00:00:00

abstract：:Background Delta check is widely used for detecting specimen mix-ups. Owing to the inadequate specificity and sparseness of the absolute incidence of mix-ups, the positive predictive value (PPV) of delta check is considerably low as it is labor consuming to identify true mix-up errors among a large number of false ale...

journal_title：Clinical chemistry and laboratory medicine

authors： Mitani T,Doi S,Yokota S,Imai T,Ohe K

更新日期：2020-02-25 00:00:00

abstract：Background:Liquid chromatography-tandem mass spectrometry (LC-MS/MS)-based assays are employed in more and more clinical laboratories to quantify steroids. The steroid quantification by LC-MS/MS shows great value in screening or diagnosing endocrine disorders; however, the number of functional steroids included in the ...

journal_title：Clinical chemistry and laboratory medicine

authors： Wang Z,Wang H,Peng Y,Chen F,Zhao L,Li X,Qin J,Li Q,Wang B,Pan B,Guo W

更新日期：2020-02-21 00:00:00

abstract：:Background Non-small cell lung cancer (NSCLC) patients benefit from targeted therapies both in first- and second-line treatment. Nevertheless, molecular profiling of lung cancer tumors after first disease progression is seldom performed. The analysis of circulating tumor DNA (ctDNA) enables not only non-invasive bioma...

journal_title：Clinical chemistry and laboratory medicine

authors： Provencio M,Pérez-Barrios C,Barquin M,Calvo V,Franco F,Sánchez E,Sánchez R,Marsden D,Cristóbal Sánchez J,Martin Acosta P,Laza-Briviesca R,Cruz-Bermúdez A,Romero A

更新日期：2020-01-28 00:00:00

abstract：:Background Monitoring of immunosuppressive drugs such as everolimus and sirolimus is important in allograft rejection prevention in transplant patients. Dried blood spots (DBS) sampling gives patients the opportunity to sample a drop of blood from a fingerprick at home, which can be sent to the laboratory by mail. Met...

journal_title：Clinical chemistry and laboratory medicine

authors： Veenhof H,Koster RA,Alffenaar JC,van den Berg AP,de Groot MR,Verschuuren EAM,Berger SP,Bakker SJL,Touw DJ

更新日期：2019-11-26 00:00:00

abstract：:Background The aim of this study was to evaluate the diagnostic performance of cerebrospinal fluid (CSF) free light chains (FLCs) in the diagnosis of Lyme neuroborreliosis (LNB). Methods Serum and CSF levels of κ- and λ-FLC, albumin and total concentration of immunoglobulin M (IgM) were determined together with CSF ch...

journal_title：Clinical chemistry and laboratory medicine

authors： Tjernberg I,Johansson M,Henningsson AJ

更新日期：2019-11-26 00:00:00

abstract：:This review evaluates the role of platelets in bleeding risk among patients with hematological disease and thrombocytopenia. Platelets are pivotal in primary hemostasis, and possess non-hemostatic properties involved in angiogenesis, tissue repair, inflammation and metastatis. Also, platelets safeguard vascular integr...

journal_title：Clinical chemistry and laboratory medicine

authors： Vinholt PJ

更新日期：2019-11-26 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：:Background The relationship between renal disease and cardiovascular disease (CVD) is currently known as cardiorenal syndrome. Indoxyl sulfate (IS) is one of the uremic toxins that accelerates the progression of cardiorenal syndrome. This report presents a new method for measuring IS in a simpler way. Methods We evalu...

journal_title：Clinical chemistry and laboratory medicine

authors： Fushimi Y,Tatebe J,Okuda Y,Ishii T,Ujiie S,Morita T

更新日期：2019-10-25 00:00:00

abstract：:Background Intravascular hemolysis and in vitro hemolysis are prevalent contributors to failed blood sample analysis in the routine hospital laboratory. Interferences by hemoglobin in spectrophotometric and certain enzyme activity assays is the major causative factor. Methods By exploiting the hemoglobin-binding prope...

journal_title：Clinical chemistry and laboratory medicine

authors： Sæderup KL,Revsholm J,Richardt PB,Christiansen SH,Hennig D,Moestrup SK,Graversen JH

更新日期：2019-10-25 00:00:00

abstract：:Background Some clinical chemistry measurement methods are vulnerable to interference if hemolyzed serum samples are used. The aims of this study were: (1) to obtain updated information about how hemolysis affects clinical chemistry test results on different instrument platforms used in Nordic laboratories, and (2) to...

journal_title：Clinical chemistry and laboratory medicine

authors： Gidske G,Aakre KM,Rustad P,Sandberg S,Norling A,Pelanti J,Henriksen G,Thorsteinsdottir I,Kristensen GBB

更新日期：2019-10-25 00:00:00

abstract：:Background Brevican, neurocan, tenascin-C and tenascin-R are extracellular matrix proteins present in brain that show increased expression in experimental animal models of brain injury. However, little is known about the dynamics of these proteins in human body fluids, such as cerebrospinal fluid (CSF) and serum, afte...

journal_title：Clinical chemistry and laboratory medicine

authors： Minta K,Cullen NC,Nimer FA,Thelin EP,Piehl F,Clarin M,Tullberg M,Jeppsson A,Portelius E,Zetterberg H,Blennow K,Andreasson U

更新日期：2019-09-25 00:00:00

abstract：:Background Biochemical bone turnover markers (BTM) are useful tools to assess bone remodeling at the cellular level. N-terminal propeptide of type I procollagen (PINP) has been recommended as a reference marker for bone formation in research studies. Methods We describe the results of a multicenter study for routine c...

journal_title：Clinical chemistry and laboratory medicine

authors： Cavalier E,Eastell R,Rye Jørgensen N,Makris K,Tournis S,Vasikaran S,Kanis JA,Cooper C,Pottel H,Morris HA,IFCC-IOF Joint Committee for Bone Metabolism (C-BM).

更新日期：2019-09-25 00:00:00

abstract：:Background Evaluating the tumor RAS/BRAF status is important for treatment selection and prognosis assessment in metastatic colorectal cancer (mCRC) patients. Correction of artifacts from library preparation and sequencing is essential for accurately analyzing circulating tumor DNA (ctDNA) mutations. Here, we assessed...

journal_title：Clinical chemistry and laboratory medicine

authors： Wang B,Wu S,Huang F,Shen M,Jiang H,Yu Y,Yu Q,Yang Y,Zhao Y,Zhou Y,Pan B,Liu T,Guo W

更新日期：2019-09-25 00:00:00

abstract：:Background For pregnant women with suspected preeclampsia, the soluble fms-like tyrosine-kinase 1 (sFlt-1)/placental growth factor (PlGF) ratio is a biomarker to aid diagnosis. We performed method comparisons between Elecsys® and Kryptor sFlt-1 and PlGF immunoassays and assessed the diagnostic performance for preeclam...

journal_title：Clinical chemistry and laboratory medicine

authors： Stepan H,Hund M,Dilba P,Sillman J,Schlembach D

更新日期：2019-08-27 00:00:00

abstract：:Background The increasing number of multi-drug resistant (MDR) bacteria provides enormous challenges for choosing an appropriate antibiotic therapy in the early phase of sepsis. While bacterial identification has been greatly accelerated by the introduction of matrix-assisted laser desorption ionization-time of flight...

journal_title：Clinical chemistry and laboratory medicine

authors： Kittel M,Findeisen P,Ghebremedhin B,Miethke T,Grundt A,Ahmad-Nejad P,Neumaier M

更新日期：2019-07-26 00:00:00

abstract：:Background The present study was undertaken to evaluate the clinical impact of a thyroglobulin (Tg) minirecovery test (Tg-mRec) in a large series of differentiated thyroid carcinoma (DTC) patients treated and monitored homogeneously in a tertiary referral center. Methods Included were 1120 serum samples from 798 DTC p...

journal_title：Clinical chemistry and laboratory medicine

authors： Giovanella L,Verburg FA,Trimboli P,Imperiali M,Keller F,Ceriani L

更新日期：2019-07-26 00:00:00

abstract：:Automation is considered one of the most important breakthroughs in the recent history of laboratory diagnostics. In a model of total laboratory automation (TLA), many analyzers performing different types of tests on different sample matrices are physically integrated as modular systems or physically connected by asse...

journal_title：Clinical chemistry and laboratory medicine

authors： Lippi G,Da Rin G

更新日期：2019-05-27 00:00:00

abstract：:Background uPA and PAI-1 are breast cancer biomarkers that evaluate the benefit of chemotherapy (CT) for HER2-negative, estrogen receptor-positive, low or intermediate grade patients. Our objectives were to observe clinical routine use of uPA/PAI-1 and to build a new therapeutic decision tree integrating uPA/PAI-1. Me...

journal_title：Clinical chemistry and laboratory medicine

authors： Reix N,Lodi M,Jankowski S,Molière S,Luporsi E,Leblanc S,Scheer L,Ibnouhsein I,Benabu JC,Gabriele V,Guggiola A,Lessinger JM,Chenard MP,Alpy F,Bellocq JP,Neuberger K,Tomasetto C,Mathelin C

更新日期：2019-05-27 00:00:00