Clin Chem Lab Med. 2025 Oct 13;64(3):e57-e61. doi: 10.1515/cclm-2025-1118. Print 2026 Feb 24. NO ABSTRACT PMID:41622866 | DOI:10.1515/cclm-2025-1118
Clin Chem Lab Med. 2026 Feb 2. doi: 10.1515/cclm-2025-1499. Online ahead of print. ABSTRACT OBJECTIVES: Diagnosing atypical IgG4-mediated anti-glomerular basement membrane (anti-GBM) disease is challenging because conventional serological assays poorly detect IgG4 antibodies. Here we study which commercial assays are affected and we describe proof-of-concept of improved IgG4 anti-GBM detection. METHODS: To investigate the scope … Read more
Clin Chem Lab Med. 2026 Jan 28. doi: 10.1515/cclm-2025-1320. Online ahead of print. ABSTRACT OBJECTIVES: The reliability of cerebrospinal fluid (CSF) and serum biomarkers depends on sample integrity, which is strongly influenced by storage conditions. While -80 °C is considered the gold standard for long-term preservation, it requires specialized infrastructure, whereas -20 °C is more … Read more
Clin Chem Lab Med. 2026 Jan 28. doi: 10.1515/cclm-2025-1387. Online ahead of print. ABSTRACT OBJECTIVES: Newborn screening for congenital hypothyroidism (CH) relies on thyroid-stimulating hormone (TSH) levels from dried blood spots (DBS). We investigated whether incorporating TSH variation across serial DBS could improve prediction of CH in term and preterm infants with complex risk profiles. … Read more
Clin Chem Lab Med. 2026 Jan 28. doi: 10.1515/cclm-2025-1647. Online ahead of print. ABSTRACT OBJECTIVES: Accurate B-lineage assignment in acute leukemia is critical for therapeutic decisions. While nuclear expression of PAX5 protein (nPAX5) is a highly reliable marker for B-cell differentiation, its conventional assessment by time-consuming immunohistochemistry (IHC) is not ideal for rapid diagnosis. This … Read more
Clin Chem Lab Med. 2026 Jan 28. doi: 10.1515/cclm-2025-1461. Online ahead of print. ABSTRACT OBJECTIVES: Testing for high-sensitivity cardiac troponin (hs-cTn) often occurs following pediatric cardiac surgery, although evidence regarding its utility remains heterogeneous. This study aimed to assess the prognostic value of postoperative hs-cTnT patterns detected within 48 h after cardiac surgery. METHODS: Serum … Read more
Clin Chem Lab Med. 2026 Jan 26. doi: 10.1515/cclm-2025-1155. Online ahead of print. ABSTRACT OBJECTIVES: 5α-dihydrotestosterone (DHT) is a potent androgen, related to male sexual development and irreversibly synthesized from testosterone via 5α-reductase. Dysfunctions in the 5α-reductase system, locally or globally, can have substantial health impacts; measurement of both DHT levels and the testosterone-DHT ratio … Read more
Clin Chem Lab Med. 2026 Jan 26. doi: 10.1515/cclm-2025-1225. Online ahead of print. ABSTRACT OBJECTIVES: This study aims to explore the biological variability of calcium homeostasis biomarkers, including calcium, phosphate, magnesium, 25-OH vitamin D, 1,25-OH vitamin D, and parathyroid hormone (PTH), and to develop a model that predicts PTH concentrations based on these parameters. METHODS: … Read more
Clin Chem Lab Med. 2026 Jan 26. doi: 10.1515/cclm-2025-1371. Online ahead of print. ABSTRACT OBJECTIVES: Voriconazole is an antifungal agent measured in serum and plasma for therapeutic drug monitoring. This study aimed to develop a robust isotope-dilution liquid chromatography-tandem mass spectrometry (ID-LC-MS/MS) reference measurement procedure (RMP) to ensure accurate and reliable quantification in compliance with … Read more
Clin Chem Lab Med. 2026 Jan 26. doi: 10.1515/cclm-2025-0994. Online ahead of print. ABSTRACT OBJECTIVES: Liquid chromatography-tandem mass spectrometry (LC-MS/MS) offers substantial analytical advantages over traditional immunoassay methods, including greater specificity and robustness. Conventional LC-MS/MS methods are labor-intensive, requiring highly trained, dedicated laboratory staff. The Cobas® i 601 analyzer (Roche Diagnostics International Ltd., Rotkreuz, Switzerland) … Read more
