The Variability of 25-hydroxyvitamin D Response From Crystalline 25-hydroxyvitamin D3
Public ClinicalTrials.gov record NCT01633658. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
The Variability of 25-hydroxyvitamin D Response From Crystalline 25-hydroxyvitamin D3 Compared to Native Vitamin D3: A Short Term Pharmacokinetic Study
Study identification
- NCT ID
- NCT01633658
- Recruitment status
- Withdrawn
- Study type
- Interventional
- Phase
- Not applicable
- Lead sponsor
- Creighton University
- Other
- Enrollment
- Not listed
Conditions and interventions
Conditions
Interventions
- cholecalciferol Dietary Supplement
- 25(OH)D Dietary Supplement
Dietary Supplement
Eligibility (public fields only)
- Age range
- 20 Years to 60 Years
- Sex
- All
- Healthy volunteers
- Accepts healthy volunteers
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Oct 31, 2012
- Primary completion
- Oct 31, 2013
- Completion
- Oct 31, 2013
- Last update posted
- May 28, 2013
2012 – 2013
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Creighton University | Omaha | Nebraska | 68131 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT01633658, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted May 28, 2013 · Synced Jul 21, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT01633658 live on ClinicalTrials.gov.