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Exploring commutable materials for serum folate measurement: challenges in cross-method harmonizationXiaerbanu Nizhamudingon June 25, 2025 at 10:00 am

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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

Isotope dilution-liquid chromatography-tandem mass spectrometry-based candidate reference measurement procedures for the quantification of total and free phenytoin in human serum and plasmaTobias Schierscheron June 21, 2025 at 10:00 am

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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

An isotope dilution-liquid chromatography-tandem mass spectrometry based candidate reference measurement procedure for the simultaneous quantification of 25-hydroxyvitamin D3 and 25-hydroxyvitamin D2 in human serum and plasmaKerstin Kandleron June 20, 2025 at 10:00 am

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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

Assessment of atypical cells in detecting bladder cancer in female patientsYan Zhaoon June 17, 2025 at 10:00 am

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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

The spectrum of nuclear patterns with stained metaphase chromosome plate: morphology nuances, immunological associations, and clinical relevanceWilson de Melo Cruvinelon June 17, 2025 at 10:00 am

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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

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