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Evaluating variability in 24-hour urine free cortisol measurements: impact of sample collection errors

Ömer Özcan1,2,3, Karlijn Koops1,2,3, Jacquelien J Hillebrand2,3

  • 1Department of Laboratory Medicine, Endocrine Laboratory, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands.

Clinical Chemistry and Laboratory Medicine
|August 16, 2026
PubMed
Abstract

Keywords:
24 h urine collectioncollection errorsurine free cortisolvariability

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