OOIR: Observatory of International Research

Papers

(The H4-Index of Clinical Chemistry and Laboratory Medicine is 31. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2022-01-01 to 2026-01-01.)

Article	Citations
Performance of the 2009 CKDEPI, 2021 CKDEPI, and EKFC equations among high-risk patients in Denmark	113
Plenary 4 - Diagnostic advances in dementia	110
Analytical performance specifications for trace elements in biological fluids derived from six countries federated external quality assessment schemes over 10 years	99
Behind the scenes of EQA – characteristics, capabilities, benefits and assets of external quality assessment (EQA): Part II – EQA cycles	79
COVID-19	73
Web-accessible critical limits and critical values for urgent clinician notification	66
Design of an algorithm for the detection of intravenous fluid contamination in clinical laboratory samples	66
Discriminating signal from noise: the biological variation of circulating calprotectin in serum and plasma	62
Analytical interference of intravascular contrast agents with clinical laboratory tests: a joint guideline by the ESUR Contrast Media Safety Committee and the Preanalytical Phase Working Group of the	50
Multiplex proteomics using proximity extension assay for the identification of protein biomarkers predictive of acute graft-vs.-host disease in allogeneic hematopoietic cell transplantation	49
SYMPOSIUM 7 - Medical test standardization in the era of Metrological Traceability: who is accountable?	48
ROUND-TABLE 1 - Beyond the Numbers: Integrating Laboratory and Clinical Perspectives on Thyroid Health	48
Frontmatter	46
A novel LC-MS/MS-based assay for the simultaneous quantification of aldosterone-related steroids in human urine	45
From assessment to action: experience from a quality improvement initiative integrating indicator evaluation and adverse event analysis in a clinical laboratory	44
Interference of therapeutic monoclonal antibodies with electrophoresis and immunofixation of serum proteins: state of knowledge and systematic review	44
7th EFLM Conference on Preanalytical Phase	43
Not all biases are created equal: how to deal with bias on laboratory measurements	43
Insight into the status of plasma renin and aldosterone measurement: findings from 526 clinical laboratories in China	43
Results of a SARS-CoV-2 virus genome detection external quality assessment round focusing on sensitivity of assays and pooling of samples	41
Diagnostic performance of a point of care high-sensitivity cardiac troponin I assay and single measurement evaluation to rule out and rule in acute coronary syndrome	40
Serial measurement of circulating calprotectin as a prognostic biomarker in COVID-19 patients in intensive care setting	39
Cell population data: much more to explore	39
Preanalytical quality improvement – an interdisciplinary journey	37
Multicenter study to compare the diagnostic performance of CLIA vs. FEIA transglutaminase IgA assays for the diagnosis of celiac disease	34

Moving average quality control of routine chemistry and hematology parameters – a toolbox for implementation	34
Diagnostic performance of machine learning models using cell population data for the detection of sepsis: a comparative study	33
Monocyte distribution width (MDW) as a screening tool for early detecting sepsis: a systematic review and meta-analysis	33
Overcoming challenges regarding reference materials and regulations that influence global standardization of medical laboratory testing results	32
An automatic chemiluminescence immunoassay for a novel biomarker NT-IGFBP-4: analytical performance and clinical relevance in heart failure	31
Quantification of blood glial fibrillary acidic protein using a second-generation microfluidic assay. Validation and comparative analysis with two established assays	31
Measurement uncertainty estimation of free drug concentrations in clinical laboratories using equilibrium dialysis	31