Clinical Chemistry and Laboratory Medicine

Histamine metabolite to basal serum tryptase ratios in systemic mastocytosis and hereditary alpha tryptasemia using a validated LC-MS/MS approachAbdulrazzaq Alherakyon May 27, 2025 at 10:00 am

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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

A cost-effective assessment for the combination of indirect immunofluorescence and solid-phase assay in ANA-screeningNicoletta Galloon May 26, 2025 at 10:00 am

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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

Vitamin D metabolome in preterm infants: insights into postnatal metabolismTomas Matejekon May 26, 2025 at 10:00 am

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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

Recommendations for the integration of standardized quality indicators for glucose point-of-care testingJulie L V Shawon May 26, 2025 at 10:00 am

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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

High myoglobin plasma samples risk being reported as falsely low due to antigen excess – follow up after a 2-year period of using a mitigating procedureAnders O Olssonon May 26, 2025 at 10:00 am

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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

Practical handling of hemolytic, icteric and lipemic samples for coagulation testing in European laboratories. A collaborative survey from the European Organisation for External Quality Assurance Providers in Laboratory Medicine (EQALM)Ann Helen Kristoffersenon May 26, 2025 at 10:00 am

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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

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