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Completed Phase 3 Interventional

Safety and Efficacy of Zemplar Capsule in Reducing Serum IPTH Levels in Chronic Kidney Disease Subjects (Three Times Weekly)

ClinicalTrials.gov ID: NCT00048438

Public ClinicalTrials.gov record NCT00048438. 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.

ClinicalTrials.gov public records Last synced Oct 22, 2026, 4:20 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

The objective of this study is to determine whether paricalcitol is safe and effective compared to placebo in reducing elevated serum PTH levels in patients with chronic kidney disease.

Study identification

NCT ID
NCT00048438
Recruitment status
Completed
Study type
Interventional
Phase
Phase 3
Lead sponsor
Abbott
Industry
Enrollment
68 participants

Conditions and interventions

Interventions

Drug

Eligibility (public fields only)

Age range
18 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
Feb 2002 (Type not available)
Primary completion
Not listed
Completion
Not listed
Last update posted
Aug 15, 2006

Started 2002

United States locations

U.S. sites
17
U.S. states
12
U.S. cities
17
Facility City State ZIP Site status
UCI Medical Center Orange California 92868 —
Western Nephrology Thornton Colorado 80260 —
Outcomes Research International, Inc. Hudson Florida 34667 —
Nephrology Association of South Miami Miami Florida 33173 —
Tampa Bay Nephrology Associates Tampa Florida 33603 —
Northwestern University Medical School Chicago Illinois 60611 —
University of Missouri Health Sciences Center Columbia Missouri 65212 —
Arms, Dodge, Robinson, Wilber and Crouch Kansas City Missouri 64111 —
Washington University School of Medicine St Louis Missouri 63110 —
NEA Research Las Vegas Nevada 89102 —
North Shore University Hospital Great Neck New York 11021 —
Mount Sinai School of Medicine New York New York 10029 —
Wake Nephrology Associates, PA Raleigh North Carolina 27609 —
Kidney and Hypertension Center Cincinnati Ohio 45220 —
Dorn VA Hospital Columbia South Carolina 29209 —
Dallas Nephrology Associates Dallas Texas 75235 —
The Vancouver Clinic, Inc., P.S. Vancouver Washington 98644 —

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

Non-U.S. locations

This page focuses on the U.S. directory. The official record also lists 1 non-U.S. site.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT00048438, 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 Aug 15, 2006 · Synced Oct 22, 2026

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Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT00048438 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →