An observational study in 25(OH)D Measurement and 25(OH)D Deficiency, sponsored by Azienda Ospedaliera di Bolzano. Completed. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2018-01-02.
Sponsored by Azienda Ospedaliera di Bolzano · Observational
The present study assessed serum 25(OH)D in a cohort of 74235 outpatients by liquid-chromatography-tandem-mass-spectrometry (LC-MS/MS).
The investigators studied the distribution of serum 25(OH)D concentrations in males and females of different age groups, the prevalence of measurable amounts of 25(OH)D2 and seasonal variability.
Measurements were performed under routine circumstances. Samples were collected in serum tubes with clot-activator. As per routine procedure, samples were centrifuged upon arrival in the lab and stored at 4° C until measurement. 25(OH)D3 and 25(OH)D2 were quantitated separately. Results from subjects \<18 years were excluded from the analysis. The study was approved by the local Ethics Committee.
Azienda Ospedaliera di Bolzano is the lead sponsor of 5 studies on the registry; 2 are open to participants now.
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The investigators analyzed retrospectively all serum 25(OH)D results from outpatients ( >18 years ) that were generated between January 1, 2015 and December 31, 2016 at the Central Laboratory of Clinical Pathology at the Bolzano Hospital (Italy). Out of 74,235 samples 3,801 cases were identified where PTH was requested at the same occasion.
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Exclusion Criteria:
25(OH)D analyses by LC-MS/MS were performed as part of our routine clinical work with a commercial kit from Recipe (Munich, Germany) ; PTH was measured in lithium-heparin plasma using the PTH STAT assay from Roche Diagnostics (Mannheim, Germany) on a Cobas 8000 auto-analyzer.
25(OH)D measurement
Describe the 25(OH)D status in South-Tyrol,a region in central Europe, by a rigorously controlled, NIST 972a aligned LC-MS/MS method.
Time frame: 2015-2016
No study locations are listed for this record.
Plan to share: No
This study is completed, as verified in Dec 2017. You cannot join it, but the record below documents what was studied.
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Azienda Ospedaliera di Bolzano