OOIR: Observatory of International Research

Papers

(The H4-Index of Clinical Chemistry and Laboratory Medicine is 30. 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 2021-09-01 to 2025-09-01.)

Article	Citations
Performance of the 2009 CKDEPI, 2021 CKDEPI, and EKFC equations among high-risk patients in Denmark	99
Plenary 4 - Diagnostic advances in dementia	90
Analytical performance specifications for trace elements in biological fluids derived from six countries federated external quality assessment schemes over 10 years	89
An isotope dilution-liquid chromatography-tandem mass spectrometry (ID-LC-MS/MS)-based candidate reference measurement procedure (RMP) for the quantification of aldosterone in human serum and plasma	87
Evaluation of the analytical and clinical performance of a new high-sensitivity cardiac troponin I assay: hs-cTnI (CLIA) assay	73
Presence of SARS-CoV-2 RNA in COVID-19 survivors with post-COVID symptoms: a systematic review of the literature	68
Moving average quality control of routine chemistry and hematology parameters – a toolbox for implementation	58
Design of an algorithm for the detection of intravenous fluid contamination in clinical laboratory samples	51
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	49
Development of a liquid chromatography mass spectrometry method for the determination of vitamin K1, menaquinone-4, menaquinone-7 and vitamin K1-2,3 epoxide in serum of individuals without vitamin K s	49
ROUND-TABLE 1 - Beyond the Numbers: Integrating Laboratory and Clinical Perspectives on Thyroid Health	47
Frontmatter	47
SYMPOSIUM 7 - Medical test standardization in the era of Metrological Traceability: who is accountable?	47
Web-accessible critical limits and critical values for urgent clinician notification	41
Not all biases are created equal: how to deal with bias on laboratory measurements	38
Quantification of blood glial fibrillary acidic protein using a second-generation microfluidic assay. Validation and comparative analysis with two established assays	38
EN ISO 15189 revision: EFLM Committee Accreditation and ISO/CEN standards (C: A/ISO) analysis and general remarks on the changes	38
Coagulation parameters in the newborn and infant – the Copenhagen Baby Heart and COMPARE studies	38
Machine learning-based delta check method for detecting misidentification errors in tumor marker tests	38
Discriminating signal from noise: the biological variation of circulating calprotectin in serum and plasma	37
Multiplex proteomics using proximity extension assay for the identification of protein biomarkers predictive of acute graft-vs.-host disease in allogeneic hematopoietic cell transplantation	36
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	36
Serial measurement of circulating calprotectin as a prognostic biomarker in COVID-19 patients in intensive care setting	35
Results of a SARS-CoV-2 virus genome detection external quality assessment round focusing on sensitivity of assays and pooling of samples	34
Diagnostic performance of machine learning models using cell population data for the detection of sepsis: a comparative study	34

A novel LC-MS/MS-based assay for the simultaneous quantification of aldosterone-related steroids in human urine	33
An automatic chemiluminescence immunoassay for a novel biomarker NT-IGFBP-4: analytical performance and clinical relevance in heart failure	31
From assessment to action: experience from a quality improvement initiative integrating indicator evaluation and adverse event analysis in a clinical laboratory	31
Multicenter study to compare the diagnostic performance of CLIA vs. FEIA transglutaminase IgA assays for the diagnosis of celiac disease	31
Measurement uncertainty estimation of free drug concentrations in clinical laboratories using equilibrium dialysis	31
Acetylcholine receptor and muscle-specific tyrosine kinase antibodies detection: is it time for a change?	30
Behind the scenes of EQA – characteristics, capabilities, benefits and assets of external quality assessment (EQA): Part II – EQA cycles	30
Overcoming challenges regarding reference materials and regulations that influence global standardization of medical laboratory testing results	30