Vitamin D Effect on Calcium Absorption on Persons on Hemodialysis
Public ClinicalTrials.gov record NCT01325610. 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.
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Official title
The Effect of Oral Cholecalciferol (Vitamin D3) on Calcium Absorption in Persons on Long-term Hemodialysis
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
The assumption has been that 1,25(OH)2D is solely responsible for calcium absorption. That has been one of the presumed causes of hyperparathyroidism in chronic kidney disease (CKD) (low 1,25(OH)2D leads to decreased calcium absorption, which increases parathyroid hormone release in compensation). Replacing 1,25 D directly has been the goal with using 1,25D or its analogues in CKD. There is very little data concerning use of native vitamin D or 25(OH)D in CKD, although autocrine functions in extrarenal tissues would use 25(OH)D. The latest KDIGO guidelines do recognize the autocrine role of vitamin D, but have no data on outcomes or doses or optimal levels to guide them and so have made a blanket recommendation to treat 25D levels in CKD by general healthy population guidelines. 1. This project focuses on an outcome (calcium absorption) that may be impacted by optimizing 25D status in renal patients. The investigators will assume for this project that a level of 25D \> 32 ng/ml is optimal in CKD patients as in a healthy population. 2. A secondary outcome is to quantify calcium absorption in CKD patients with and without vitamin D repletion and to quantify systemic 1,25D levels. This may clarify the roles 25D and 1,25D play in calcium absorption.
Study identification
- NCT ID
- NCT01325610
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Not applicable
- Enrollment
- 37 participants
Conditions and interventions
Eligibility (public fields only)
- Age range
- 19 Years and older
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Mar 31, 2011
- Primary completion
- Dec 31, 2011
- Completion
- Jan 31, 2012
- Last update posted
- Apr 3, 2012
2011 – 2012
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 NCT01325610, 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 Apr 3, 2012 · Synced Sep 3, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT01325610 live on ClinicalTrials.gov.