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An isotope dilution-liquid chromatography-tandem mass spectrometry-based candidate reference measurement procedure for the quantification of testosterone in human serum and plasmaElie Fuxon February 18, 2026 at 11:00 am

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Clin Chem Lab Med. 2026 Feb 6. doi: 10.1515/cclm-2024-1266. Online ahead of print. ABSTRACT OBJECTIVES: This study presents a candidate reference measurement procedure (RMP) for testosterone quantification in human serum and plasma, utilizing isotope dilution-liquid chromatography-tandem mass spectrometry (ID-LC MS/MS). METHODS: The developed LC-MS/MS method employs a two-dimensional heart-cut LC approach combined with solid-phase extraction … Read more

Stability of different biochemical parameters in pooled left-over sera stored for 14 days after pooling either at room temperature or at 2-10 °CMaja Zabelon February 18, 2026 at 11:00 am

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Clin Chem Lab Med. 2026 Feb 5. doi: 10.1515/cclm-2025-1693. Online ahead of print. ABSTRACT OBJECTIVES: This stability study aimed to evaluate the stability of 48 biochemical analytes in pooled serum samples derived from leftover sera over 14 days at room temperature (RT) and at 2-10 °C, and to assess the consistency of storage effects across … Read more

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