ArticleJournal of mass spectrometry and advances in the clinical lab2025
Validation of an LC-MS/MS method for urinary homovanillic and vanillylmandelic ACIDS and application to the diagnosis of neuroblastoma.
Article in Journal of mass spectrometry and advances in the clinical lab, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Homovanillic acid and vanillylmandelic acid as neuroblastoma biomarkers in children.Biochemia medica · 2026Review
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16 authors.
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Abstract
Background: Urinary catecholamine metabolites are well-established biomarkers for neuroblastoma (NB). Homovanillic acid (HVA) and vanillylmandelic acid (VMA) are the most frequently measured metabolites within SIOPEN - Catecholamine Working Group laboratories. Here, we evaluated the performance of a new LC-MS/MS in vitro diagnostic (IVD) kit for HVA and VMA to facilitate inter-laboratory harmonization. Methods: HVA and VMA and their deuterated internal standards were analyzed with a commercial method, on a ThermoFisher Quantiva LC-MS/MS. Validation was performed first using internal quality control and external quality assessment (IQC and EQA) samples. Next by clinical validation on 120 samples, previously tested by HPLC-ECD. Finally, 36 samples were exchanged between SIOPEN reference laboratories and analyzed by three methods. Results: Using QCs and EQA the method was validated in a wide calibration range (4.61-830 µmol/L for HVA and 4.44-800 µmol/L for VMA). Intra-day CVs ( Conclusion: The LC-MS/MS IVD method could be considered a useful tool for clinical laboratories involved in the measurement of catecholamines, contributing to harmonization efforts.
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