Clin Chem Lab Med. 2025 Jul 3. doi: 10.1515/cclm-2025-0306. Online ahead of print. ABSTRACT OBJECTIVES: The acquired, somatic JAK2V617F mutation is the most common molecular aberration in patients with myeloproliferative neoplasms (MPN) and also significantly involved in the regulation of T cell immunity. PD-1, PD-L1 and CTLA-4 are key immune checkpoint regulators that are elevated … Read more
Clin Chem Lab Med. 2025 Jun 27. doi: 10.1515/cclm-2025-0499. Online ahead of print. ABSTRACT OBJECTIVES: Antiphospholipid syndrome (APS) is an autoimmune disorder characterized by thrombosis and obstetric complications associated with antiphospholipid antibodies (aPLs). This study aimed to compare the diagnostic performance of six commercial assay systems for detecting aCL and aβ2GPI antibodies. METHODS: Sixty-three APS … Read more
Clin Chem Lab Med. 2025 Jun 26. doi: 10.1515/cclm-2024-1403. Online ahead of print. ABSTRACT OBJECTIVES: Commutability is a critical attribute for reference materials (RMs) employed in standardization and calibration activities, it ensures the accuracy and equivalence of analytical results across heterogeneous measurement systems and laboratories. In the context of folate quantification, commutability holds particular significance, … Read more
Clin Chem Lab Med. 2025 Jun 23. doi: 10.1515/cclm-2024-0858. Online ahead of print. ABSTRACT OBJECTIVES: An isotope dilution-liquid chromatography-tandem mass spectrometry (ID-LC-MS/MS)-based candidate reference measurement procedure (RMP) was developed and validated to accurately measure serum and plasma concentrations of total and free phenytoin. METHODS: Quantitative nuclear magnetic resonance spectroscopy (qNMR) was used to determine the … Read more
Clin Chem Lab Med. 2025 Jun 20. doi: 10.1515/cclm-2024-1138. Online ahead of print. ABSTRACT OBJECTIVES: An isotope dilution-liquid chromatography-tandem mass spectrometry (ID-LC-MS/MS)-based candidate reference measurement procedure (RMP) for the quantification of 25-hydroxyvitamin D2 (25OHD2) and 25-hydroxyvitamin D3 (25OHD3) in human serum and plasma is presented. METHODS: Quantitative Nuclear Magnetic Resonance (qNMR) spectroscopic methodology has been … Read more
Clin Chem Lab Med. 2025 Jun 18. doi: 10.1515/cclm-2025-0268. Online ahead of print. ABSTRACT OBJECTIVES: Atypical or malignant urothelial cells may be identified with a research parameter of atypical cells (Atyp.C) using a fully automated urine particle analyzer in routine urinalysis. This study aimed to determine whether Atyp.C can serve as an effective screening tool … Read more
Clin Chem Lab Med. 2025 Jun 18. doi: 10.1515/cclm-2025-0286. Online ahead of print. ABSTRACT The indirect immunofluorescence assay (IFA) on HEp-2 cells is the prevailing method used to screen for autoantibodies in the investigation of systemic autoimmune diseases (SAID). When positive, the titer provides a semi-quantitative assessment of the autoantibody serum concentration whereas the immunofluorescence … Read more
Clin Chem Lab Med. 2025 Jun 16. doi: 10.1515/cclm-2025-0076. Online ahead of print. ABSTRACT OBJECTIVES: Heavy Metals (HMs) concentrations vary with living environments, diet, and personal habits. This study aims to establish health-related reference intervals (RIs) for selected HMs in healthy, non-occupationally exposed young adults living in an urban environment. METHODS: The Uni4Me study enrolled … Read more
Clin Chem Lab Med. 2025 Jun 9. doi: 10.1515/cclm-2025-0433. Online ahead of print. ABSTRACT The sweat test is used as a biological marker of cystic fibrosis transmembrane conductance regulator (CFTR) dysfunction, but there is growing recognition that sweat chloride concentrations of people with cystic fibrosis (CF) can overlap with those without CF. There are also … Read more
Clin Chem Lab Med. 2025 Jun 4. doi: 10.1515/cclm-2025-0238. Online ahead of print. ABSTRACT OBJECTIVES: Type 1 diabetes (T1D) is a chronic autoimmune disease causing β-cell destruction, hyperglycemia, and lifelong insulin dependence that can lead to severe complications like ketoacidosis, with a 1 % mortality rate in newly diagnosed patients. A significant breakthrough in T1D … Read more
Clin Chem Lab Med. 2025 Jun 2. doi: 10.1515/cclm-2025-0148. Online ahead of print. ABSTRACT OBJECTIVES: Home blood sampling for clinical purposes has gained much interest. This study validates the recently developed Topper-based capillary blood collection procedure for 15 commonly used chemistry analytes. METHODS: A total of 120 study participants (21 healthy volunteers and 99 patients) … Read more
Clin Chem Lab Med. 2025 May 30. doi: 10.1515/cclm-2025-0549. Online ahead of print. ABSTRACT Since several years, sports authorities, including national anti-doping organisations and the World Anti-Doping Agency (WADA) have published that the consumption of food supplements can be at risk for athletes due to potential contamination by prohibited substances. Despite these warnings, supplements are … Read more
Clin Chem Lab Med. 2025 May 30. doi: 10.1515/cclm-2025-0265. Online ahead of print. ABSTRACT OBJECTIVES: To evaluate the characteristics of an immunochemical urinary free light chains (uFLC) test in screening and quantifying Bence Jones proteinuria (BJP) and its potential application in laboratory practice as an alternative to the gold standard method, urine immunofixation (UIFE) and … Read more
Clin Chem Lab Med. 2025 May 28. doi: 10.1515/cclm-2025-0302. Online ahead of print. ABSTRACT OBJECTIVES: This study aimed to develop and validate a machine learning (ML) model utilizing cerebrospinal fluid (CSF) body fluid parameters from hematology analyzers to screen for malignant cells. METHODS: We analyzed 643 consecutive CSF samples from patients with central nervous system … Read more
Clin Chem Lab Med. 2025 May 28. doi: 10.1515/cclm-2025-0482. Online ahead of print. ABSTRACT Artificial intelligence (AI) is rapidly transforming laboratory medicine, impacting medical devices and healthcare practices. Despite these advancements, AI-based medical device software (MDSW) introduces a new layer of complexity in regulatory compliance. This paper outlines the regulatory landscape for MDSW and AI-driven … Read more
Clin Chem Lab Med. 2025 May 28. doi: 10.1515/cclm-2025-0309. Online ahead of print. ABSTRACT OBJECTIVES: Spontaneous subarachnoid hemorrhage (sSAH) is a life-threatening neurological event with high morbidity and mortality. Predicting patient outcomes remains challenging, necessitating novel prognostic tools. This study evaluates the prognostic value of central and systemic serum biomarkers, including S100, neuron-specific enolase (NSE), … Read more
Clin Chem Lab Med. 2025 May 28. doi: 10.1515/cclm-2025-0507. Online ahead of print. ABSTRACT OBJECTIVES: In clinical practice, glycated albumin (GA), as a key biomarker reflecting the level of blood glucose control in the short and medium term, has been widely used in the diagnosis and efficacy monitoring of diabetes. However, the consistency of GA … Read more
Clin Chem Lab Med. 2025 May 28. doi: 10.1515/cclm-2025-0491. Online ahead of print. ABSTRACT OBJECTIVES: Machine learning (ML) models, using laboratory data, support early sepsis prediction. However, analytical bias in laboratory measurements can compromise their performance and validity in real-world settings. We aimed to evaluate how analytically acceptable bias may affect the validity and generalizability … Read more
Clin Chem Lab Med. 2025 May 28. doi: 10.1515/cclm-2024-1236. Online ahead of print. ABSTRACT Ischemic heart disease remains the leading cause of death globally, with acute coronary syndrome (ACS) being the main reason for emergency hospital admissions and thus representing a significant health care issue worldwide. Cardiac troponin I (cTnI) and cardiac troponin T (cTnT) … Read more
Clin Chem Lab Med. 2025 May 8. doi: 10.1515/cclm-2025-0125. Online ahead of print. ABSTRACT OBJECTIVES: To investigate whether frozen storage duration influences κ-FLC index. METHODS: CSF and serum samples of patients with multiple sclerosis collected for routine diagnostic purposes had been stored at -20 °C. κ-FLC and albumin concentrations were measured at two different timepoints, … Read more
Clin Chem Lab Med. 2025 May 26. doi: 10.1515/cclm-2024-1255. Online ahead of print. ABSTRACT OBJECTIVES: A new candidate isotope dilution-liquid chromatography-tandem mass spectrometry (ID-LC-MS/MS)-based reference measurement procedure (RMP) has been developed for the accurate and precise quantification of 17β-estradiol (E2) in human serum and plasma covering a measurement range from 0.400 to 5,000 pg/mL (1.47-18,357 … Read more
Clin Chem Lab Med. 2025 May 23. doi: 10.1515/cclm-2024-1135. Online ahead of print. ABSTRACT OBJECTIVES: Androstenedione (ASD) is a biomarker used in the diagnosis of hyperandrogenism and adrenal hyperplasia. Therefore, accurate measurement of serum ASD is pivotal in clinical settings. We aimed to develop a novel highly selective reference measurement procedure (RMP) based on isotope … Read more
Clin Chem Lab Med. 2025 May 22. doi: 10.1515/cclm-2025-0189. Online ahead of print. ABSTRACT OBJECTIVES: Histamine, mainly produced in mast cells (MC), plays a key role in allergy and inflammation. Measuring its urinary metabolites, N-methylhistamine (NMH) and 1-methyl-4-imidazoleacetic acid (MIMA), is essential in assessing histamine-related pathologies. Patients with concurrent systemic mastocytosis (SM) and hereditary alpha … Read more
Clin Chem Lab Med. 2025 May 22. doi: 10.1515/cclm-2025-0409. Online ahead of print. ABSTRACT OBJECTIVES: Antigen excess (AE) or high dose hook-effect can seriously affect the reported concentration of an analyte, which may impact clinical decisions. This study analyze to what extent the Roche Elecsys® Myoglobin assay is affected by antigen excess and how this … Read more
Clin Chem Lab Med. 2025 May 22. doi: 10.1515/cclm-2025-0319. Online ahead of print. ABSTRACT OBJECTIVES: Coagulation test results may be affected by hemolysis, icterus and/or lipemia (HIL). Detailed guidelines for HIL-management are missing, both for manual and automatic HIL-checks. The aim of this survey was to provide an overview of the practical procedures for the … Read more
Clin Chem Lab Med. 2025 May 22. doi: 10.1515/cclm-2025-0210. Online ahead of print. ABSTRACT OBJECTIVES: The aim of this study was to carry out a cross-analysis of the morphological abnormalities (MA) and the electrophoretic profile (EP) of blood samples suspect for heterozygous haemoglobinopathies (HTZ HGP). Screening for HTZ HGP was based on erythrocyte parameters provided … Read more
Clin Chem Lab Med. 2025 May 22. doi: 10.1515/cclm-2025-0170. Online ahead of print. ABSTRACT OBJECTIVES: Anti-nuclear antibodies (ANA) testing on indirect immunofluorescence (IIF) has been for a long time the gold standard assay in the diagnosis of rheumatic diseases; more recently different solid phase assays (SPA) have been recommended to increase specificity of positive results. … Read more
Clin Chem Lab Med. 2025 May 22. doi: 10.1515/cclm-2025-0311. Online ahead of print. ABSTRACT OBJECTIVES: To describe the structure of vitamin D metabolome and investigate the possible cause of high serum levels of C3 epimers of 25-(OH)D in preterm infants, we compared the vitamin D metabolites in umbilical cord blood with serum samples taken at … Read more
Clin Chem Lab Med. 2025 May 22. doi: 10.1515/cclm-2025-0448. Online ahead of print. ABSTRACT OBJECTIVES: Quality indicator (QI) monitoring is essential to quality assurance for point of care testing (POCT). QI standardization is needed in the POCT field to provide clear guidance to hospitals and produce National and International benchmarks. A central aim was to … Read more
Clin Chem Lab Med. 2025 May 5. doi: 10.1515/cclm-2025-0418. Online ahead of print. ABSTRACT Cardiac injury, encompassing a spectrum of heart muscle damage, requires prompt and accurate diagnosis to improve patient outcomes. Early detection using cardiac biomarkers is vital for timely intervention and reducing mortality. This review highlights the role of high-sensitivity cardiac troponins (hs-cTns) … Read more
Clin Chem Lab Med. 2025 May 5. doi: 10.1515/cclm-2025-0490. Online ahead of print. ABSTRACT After the dissemination of a manifesto for the implementation of value-based laboratory medicine (VBLM) and a Strategic Conference dedicated to this issue, a novel initiative of the European Federation of Clinical Chemistry and Laboratory Medicine (EFLM) is to be initiated with … Read more
Clin Chem Lab Med. 2025 May 5. doi: 10.1515/cclm-2025-0323. Online ahead of print. ABSTRACT Laboratory diagnostics play a crucial role in modern medicine and healthcare economics. The effective management of a medical laboratory is based on reliable assessment of indicators characterizing quality of testing, productivity, velocity (speed) and cost-effectiveness. The usual concepts of laboratory management … Read more
Clin Chem Lab Med. 2025 May 5. doi: 10.1515/cclm-2025-0190. Online ahead of print. ABSTRACT OBJECTIVES: Clinical laboratory errors pose a threat to patient safety and previous studies have demonstrated that pre-analytical error is the most common error type. Our study aimed to determine the types and frequency of errors occurring in clinical laboratory testing in … Read more
Clin Chem Lab Med. 2025 May 1. doi: 10.1515/cclm-2024-1510. Online ahead of print. ABSTRACT OBJECTIVES: In the early stage of gastric cancer (GC), identifying cancer-specific biomarkers is a key step in the disease screening process. This study aims to explore the clinical value of five novel protein biomarkers and their combination (5 MP) for GC … Read more
Clin Chem Lab Med. 2025 May 1. doi: 10.1515/cclm-2025-0352. Online ahead of print. ABSTRACT OBJECTIVES: In serum immunofixation electrophoresis, therapeutic monoclonal antibodies (tmAbs) can be misinterpreted as paraproteins. Strategies to circumvent these interferences include the use of anti-tmAb antibodies, which led to the development of the Hydrashift assay. However, this assay is exclusively available for … Read more
Clin Chem Lab Med. 2025 May 1. doi: 10.1515/cclm-2025-0186. Online ahead of print. ABSTRACT OBJECTIVES: Therapeutic drug monitoring (TDM) is critical for optimizing antipsychotic therapy, yet inter-laboratory comparability in China remains poor. Unstandardized practices risk suboptimal dosing and adverse effects, highlighting the need for standardization. This study evaluated TDM practices for six antipsychotics (olanzapine, clozapine, … Read more
Clin Chem Lab Med. 2025 Apr 28. doi: 10.1515/cclm-2025-0486. Online ahead of print. ABSTRACT The IFCC Task Force on Global Lab Quality (TF-GLQ) has recently released a new guidance for internal quality control (IQC) practice through an approach translating the general principles as stated in the ISO 15189:2022 standard to a series of practical recommendations. … Read more
Clin Chem Lab Med. 2024 Dec 31;63(6):1139-1152. doi: 10.1515/cclm-2024-1350. Print 2025 May 26. ABSTRACT OBJECTIVES: Measurements of acid-base status are performed quickly after blood sampling avoiding errors. This necessitates rapid sample transport which can be problematic. This study measures blood sampled in critically ill patients over 180 min and proposes a mathematical physio-chemical model to … Read more
Clin Chem Lab Med. 2025 Apr 25. doi: 10.1515/cclm-2025-0098. Online ahead of print. ABSTRACT OBJECTIVES: Potential coeliac disease (PCD) is defined by the presence of positive CD-specific autoantibodies with a normal/extremely mildly damaged intestinal mucosa. This study sought to examine the progression of PCD in children maintaining a gluten-containing diet and to identify risk factors … Read more
Clin Chem Lab Med. 2025 Apr 24. doi: 10.1515/cclm-2025-0329. Online ahead of print. ABSTRACT OBJECTIVES: To explore the reasons behind the lack of commutability in protein solution reference materials (RMs) and seeks to eliminate these factors in order to develop commutable reference materials, using human insulin (hINS) as example, to meet the growing demand for … Read more
Clin Chem Lab Med. 2025 Apr 24. doi: 10.1515/cclm-2025-0240. Online ahead of print. ABSTRACT OBJECTIVES: Serum cholinesterase (ChE) 3.1.1.8 is measured to assess exposure to organophosphorus pesticides and determine deficiency related to prolonged apnea after the induction of anesthesia with certain drugs and less often as an indicator of liver function. Biological variation (BV) is … Read more
Clin Chem Lab Med. 2025 Apr 24. doi: 10.1515/cclm-2025-0478. Online ahead of print. ABSTRACT The negative impact of preanalytical errors on the quality of laboratory testing is now universally recognized. Nonetheless, recent technological advancements and organizational transformations in healthcare – catalyzed by the still ongoing coronavirus disease 2019 (COVID-19 pandemic) – have introduced new challenges … Read more
Clin Chem Lab Med. 2025 Apr 21. doi: 10.1515/cclm-2025-0007. Online ahead of print. ABSTRACT OBJECTIVES: To investigate whether renal function impacts CSF κ-FLC concentration and/or κ-FLC index. METHODS: Patients with non-inflammatory neurological diseases were eligible. κ-FLC index was calculated as (CSF κ-FLC/serum κ-FLC)/albumin quotient. Structural equation modeling (SEM) was used to evaluate the direct influence … Read more
Clin Chem Lab Med. 2025 Apr 21. doi: 10.1515/cclm-2025-0128. Online ahead of print. ABSTRACT OBJECTIVES: The diagnostic accuracy of presepsin (P-SEP) in the newborn is still under evaluation. METHODS: In a multicenter study, we studied the accuracy of P-SEP as a diagnostic marker of late-onset sepsis (LOS) in critical newborns with underlying disorders, to define … Read more
Clin Chem Lab Med. 2025 Apr 21. doi: 10.1515/cclm-2025-0089. Online ahead of print. ABSTRACT OBJECTIVES: Accurate medical laboratory reports are essential for delivering high-quality healthcare. Recently, advanced artificial intelligence models, such as those in the ChatGPT series, have shown considerable promise in this domain. This study assessed the performance of specific GPT models-namely, 4o, o1, … Read more
Clin Chem Lab Med. 2025 Apr 18. doi: 10.1515/cclm-2025-0203. Online ahead of print. ABSTRACT OBJECTIVES: Monoclonal gammopathies (MGs) are characterized by the presence of monoclonal immunoglobulins (M-proteins). Currently, recommendations for screening of MGs primarily rely on nephelometry, turbidimetry and electrophoresis, which have inherent limitations in sensitivity and throughput. This study aimed to evaluate a novel … Read more
Clin Chem Lab Med. 2025 Apr 17. doi: 10.1515/cclm-2024-1478. Online ahead of print. ABSTRACT OBJECTIVES: Cortisone is an inert precursor/metabolite of the potent steroid hormone cortisol. Measurement of serum cortisone levels and the cortisol-cortisone ratio can be useful for the diagnosis of dysfunction in the regulation of cortisol levels (i.e., severe and subtle apparent mineralocorticoid … Read more
Clin Chem Lab Med. 2025 Apr 17. doi: 10.1515/cclm-2024-1118. Online ahead of print. ABSTRACT OBJECTIVES: We aimed to evaluate sex-specific 0-h high-sensitivity cardiac troponin T (hs-cTnT) thresholds for risk stratification in patients with suspected non-ST-segment elevation myocardial infarction (NSTEMI). METHODS: This retrospective study investigated a derivation cohort of 6,691 (44.4 % female and aged 65 … Read more
Clin Chem Lab Med. 2025 Apr 16. doi: 10.1515/cclm-2025-0152. Online ahead of print. ABSTRACT Laboratory medicine is faced with rapid developments in data exchange, secondary use of data and artificial intelligence. Safe exchange of laboratory data requires a suitable terminology standard. NPU, LOINC and SNOMED CT are increasingly used for this purpose, but none of … Read more
Clin Chem Lab Med. 2025 Apr 14. doi: 10.1515/cclm-2024-1226. Online ahead of print. ABSTRACT OBJECTIVES: Diagnosing monoclonal gammopathy in chronic kidney disease (CKD) patients is challenging due to the complex interpretation of serum free light chain (FLC) levels. This study aimed to assess the FLC levels in a large cohort of Chinese CKD patients. METHODS: … Read more
Clin Chem Lab Med. 2025 Apr 14. doi: 10.1515/cclm-2025-0183. Online ahead of print. ABSTRACT OBJECTIVES: Dried blood spot (DBS) specimen acceptance guidelines recommend rejecting specimens based on DBS size, often expressed as a diameter. Computer vision methods can estimate DBS size from images obtained from standalone equipment, smartphone cameras or existing laboratory instrumentation. However, no … Read more
Clin Chem Lab Med. 2025 Apr 11. doi: 10.1515/cclm-2025-0331. Online ahead of print. ABSTRACT INTRODUCTION: To analyze the available evidence about the correlation between the presence of detectable amounts of clostebol metabolites in urine and the transdermal or transmucosal contact of clostebol. CONTENT: A systematic review was performed. A systematic search was conducted in PubMed/MEDLINE, … Read more
Clin Chem Lab Med. 2025 Apr 11. doi: 10.1515/cclm-2025-0401. Online ahead of print. ABSTRACT The Joint Committee for Traceability in Laboratory Medicine (JCTLM) database represents a valuable resource for implementing metrological traceability in laboratory medicine. Three main database users can be identified: (a) in vitro diagnostic (IVD) manufacturers, using the database information for meeting ISO … Read more
Clin Chem Lab Med. 2025 Apr 11. doi: 10.1515/cclm-2025-0180. Online ahead of print. ABSTRACT OBJECTIVES: Traditional biomarkers used for sepsis diagnosis have limited sensitivity and specificity and, so far, are not recommended for sepsis diagnosis. We aimed to evaluate diagnostic accuracy of XN-9000® hematology analyzer derived cell population data (CPD) for sepsis. METHODS: We conducted … Read more
Clin Chem Lab Med. 2025 Apr 8. doi: 10.1515/cclm-2025-0219. Online ahead of print. ABSTRACT Amongst the main perspectives when evaluating the results of medical studies are statistical significance (following formal statistical testing) and clinical significance. While statistical significance shows that a factor’s observed effect on the study results is unlikely (for a given alpha) to … Read more
Clin Chem Lab Med. 2025 Apr 8. doi: 10.1515/cclm-2024-1374. Online ahead of print. ABSTRACT OBJECTIVES: Urine albumin is a key biomarker utilized for diagnosis and monitoring progression of chronic kidney disease (CKD). These characteristics highlight the importance urine albumin serves in patient management. However, laboratory results are confounded by a lack of standardization where results … Read more
Clin Chem Lab Med. 2025 Apr 8. doi: 10.1515/cclm-2025-0264. Online ahead of print. ABSTRACT OBJECTIVES: Macroprolactin (macro-PRL) mostly comprises a complex of PRL with IgG. The aim of this study was to clarify whether IgA-type macro-PRL exists and, if so, to elucidate the prevalence of and differences in laboratory data from IgG-type. METHODS: One hundred … Read more
Clin Chem Lab Med. 2025 Apr 7. doi: 10.1515/cclm-2024-1312. Online ahead of print. ABSTRACT OBJECTIVES: Primary aldosteronism (PA) is a common cause of secondary hypertension. The aldosterone-to-renin ratio (ARR) is the current recommended biomarker for PA screening, but it has limitations. This study evaluates another ratio, the aldosterone-to-angiotensin II ratio (AAIIR), as an alternative screening … Read more
Clin Chem Lab Med. 2025 Apr 7. doi: 10.1515/cclm-2025-0177. Online ahead of print. ABSTRACT OBJECTIVES: This study aimed to investigate the prevalence of macroprolactinemia and the changes in hyperprolactinemia status over time among hyperprolactinemic patients in the Turkish population. METHODS: A retrospective study was conducted on 3,013 patient records from a central university hospital between … Read more
Clin Chem Lab Med. 2025 Apr 4. doi: 10.1515/cclm-2025-0163. Online ahead of print. ABSTRACT OBJECTIVES: Recent advances in information technology have renewed interest in patient-based real-time quality control (PBRTQC) as an alternative to internal quality control (IQC). However, since regulations mandate IQC, PBRTQC can only be implemented as a separate system. The additional labor required … Read more
Clin Chem Lab Med. 2025 Mar 31. doi: 10.1515/cclm-2025-0117. Online ahead of print. ABSTRACT OBJECTIVES: The stability of plasma samples for basic coagulation tests, prothrombin time (PT) and activated partial thromboplastin time (aPTT), has been widely studied. Recently, the Clinical and Laboratory Standards Institute (CLSI) updated its recommendations, extending the acceptable time frame for aPTT. … Read more
Clin Chem Lab Med. 2025 Mar 25. doi: 10.1515/cclm-2024-1387. Online ahead of print. ABSTRACT OBJECTIVES: We determined the efficacy of a high sensitivity cardiac troponin I (hs-cTnI) assay for newly derived 0 h and 0/2-h rule-out concentrations for myocardial infarction and determined the safety of incremental changes at low concentrations. METHODS: Consecutive, emergency department patients … Read more
Clin Chem Lab Med. 2025 Mar 24. doi: 10.1515/cclm-2024-1428. Online ahead of print. ABSTRACT OBJECTIVES: The insulin-like growth factors (IGFs) regulate growth in humans. IGF-I and IGF binding protein (IGFBP)-3 are biomarkers in children with growth disorders. We investigate a targeted proteomics method for absolute quantitation of eight IGF protein family members in human serum, … Read more
Clin Chem Lab Med. 2025 Mar 21. doi: 10.1515/cclm-2025-0032. Online ahead of print. ABSTRACT OBJECTIVES: The Certified Reference Material (CRM) ERM®-DA477/IFCC is a new polyclonal IgG anti-beta2-glycoprotein I (anti-β2GPI) material for the harmonization of the laboratory diagnosis of antiphospholipid syndrome (APS). We evaluated CRM’s ability to represent the heterogeneity of APS patient anti-β2GPI antibodies and … Read more
Clin Chem Lab Med. 2025 Mar 20. doi: 10.1515/cclm-2024-1400. Online ahead of print. ABSTRACT OBJECTIVES: Many patients with sex chromosome abnormalities (SCAs) are diagnosed late in life or remain undiagnosed, leading to delayed or inadequate medical intervention and care. This study aimed to develop a reliable, rapid and cost-effective test for identifying SCAs using a … Read more
Clin Chem Lab Med. 2025 Mar 20. doi: 10.1515/cclm-2024-1399. Online ahead of print. ABSTRACT OBJECTIVES: Medical biology is essential for diagnosing and monitoring cardio-reno-metabolic diseases. The EPI-CKD1 study utilizes data from Biogroup® French laboratories to examine the burden of chronic kidney disease (CKD) and the effect of heart failure, and diabetes in an outpatient setting … Read more
Clin Chem Lab Med. 2025 Mar 19. doi: 10.1515/cclm-2024-1360. Online ahead of print. ABSTRACT OBJECTIVES: Human tear analysis holds promise for biomarker discovery, but its clinical utility is hindered by the lack of standardized reference values, limiting interindividual comparisons. This study aimed at developing a protocol for normalizing metabolomic data from human tears, enhancing its … Read more
