Lipoprotein X as a source of analytical and interpretative interference in routine laboratory testingShanshan Liangon August 14, 2026 at 10:00 am

Clin Chem Lab Med. 2026 Aug 17. doi: 10.1515/cclm-2026-0950. Online ahead of print. ABSTRACT Lipoprotein X (LpX) is an abnormal lipoprotein-like particle occurring mainly in cholestasis, lecithin-cholesterol acyltransferase deficiency, post-transplant cholestatic liver dysfunction, hepatic graft-versus-host disease, and selected intravenous lipid emulsion or parenteral nutrition settings. Enrichment in phospholipids and unesterified cholesterol, paucity of cholesteryl esters … Read more

A liquid chromatography-tandem mass spectrometry-based candidate reference measurement procedure for the quantification of vancomycin in human serum and plasmaSandra Fleischeron August 11, 2026 at 10:00 am

Clin Chem Lab Med. 2026 Aug 12. doi: 10.1515/cclm-2026-0509. Online ahead of print. ABSTRACT OBJECTIVES: Vancomycin is a glycopeptide antibiotic used to treat severe Gram-positive infections; its narrow therapeutic window makes therapeutic drug monitoring (TDM) critical. We report the development of a liquid chromatography-tandem mass spectrometry (LC-MS/MS) candidate reference measurement procedure (RMP) to quantify vancomycin … Read more

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