Acidification of 24-hour urine in urolithiasis risk testing: An obsolete relic?
Jazyk angličtina Země Nizozemsko Médium print-electronic
Typ dokumentu časopisecké články
PubMed
35597305
DOI
10.1016/j.cca.2022.05.010
PII: S0009-8981(22)01144-5
Knihovny.cz E-zdroje
- Klíčová slova
- Kidney stone, Metabolic evaluation, Preanalytical phase, Secondary prevention, Stone former patients, Urine preservation,
- MeSH
- hořčík MeSH
- koncentrace vodíkových iontů MeSH
- kyselina citronová MeSH
- lidé MeSH
- rizikové faktory MeSH
- senioři MeSH
- urolitiáza * diagnóza moč MeSH
- vápník MeSH
- Check Tag
- lidé MeSH
- senioři MeSH
- Publikační typ
- časopisecké články MeSH
- Názvy látek
- hořčík MeSH
- kyselina citronová MeSH
- vápník MeSH
BACKGROUND: Recommendations on the optimal preservation of 24 h urine for the metabolic work-up in urolithiasis patients are very heterogeneous. In case two such tests with different storage condition recommendations are being analysed, multiple collections would be needed, challenging especially elderly and very young patients. We therefore aimed to evaluate the stability of urine constituents under different storage conditions. MATERIAL AND METHODS: We collected urine samples from ten healthy volunteers and prepared aliquots to be stored either at room temperature or 4 °C. Some aliquots were preserved using hydrochloric acid prior to storage, some thereafter, some using the BD Urine preservation tube and some were not preserved at all. Storage duration was 0, 24, 48 or 72 h. In all samples calcium, magnesium, phosphorus, creatinine, oxalate, citrate and uric acid were measured and compared to the according reference sample. RESULTS: We could not find any significant deviation for any of the analytes and preanalytical treatment conditions compared to the associated reference sample. CONCLUSION: Preservation of 24 h urine for the metabolic evaluation in stone formers might not be necessary for sample storage up to 72 h.
Clinical Department of Laboratory Medicine University Hospitals Leuven Leuven Belgium
Department of Laboratory Medicine Paracelsus Medical University Salzburg Austria
Department of Urology Barmherzige Brüder Hospital Salzburg Austria
Institute for Laboratory Medicine and Medical Microbiology Medizet München Klinik Munich Germany
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