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Copeptin in Differentiation of Polyuria and Polydipsia

This study has been completed.
Dr. Carson Liu Med Corp.
Information provided by:
University of Wuerzburg Identifier:
First received: January 25, 2010
Last updated: April 22, 2011
Last verified: November 2010

The differential diagnosis of patients with polyuria/ polydipsia is often complex, but important for the therapeutic strategy.

Challenging is in particular the clinical differentiation between patients with a partial Diabetes insipidus centralis and patients with primary polydipsia as underlying disease, because both groups are associated with similar urinary osmolalities.

The determination of plasma arginine vasopressin is unusual in this context, since measurement of AVP is not reliably.

C-terminal ProVasopressin (copeptin) is secreted stoichiometrically with AVP from the neurohypophysis, but has a longer half life in the circulation, and is thus easier to measure.

Therefore, the investigators will analyze in that study the diagnostic utility of plasma copeptin in the differential diagnosis of polyuria and polydipsia.

Polyuria Polydipsia

Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Prospective

Resource links provided by NLM:

Further study details as provided by University of Wuerzburg:

Estimated Enrollment: 50
Study Start Date: March 2008
Study Completion Date: November 2010
Primary Completion Date: November 2010 (Final data collection date for primary outcome measure)
Primary Polydip, D. insipidus


Ages Eligible for Study:   18 Years to 70 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Sampling Method:   Probability Sample
Study Population
Healthy probands Patients with diabetes insipdus centralis totalis/ partials Patients with diabetes insipidus renalis Patients with primary polydipsia

Inclusion Criteria:

  • Patients with polydipsia/ polyuria, with indication for performing a deprivation test
  • > 18 years

Exclusion Criteria:

  • dDAVP during the last 14d
  • pregnancy
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Please refer to this study by its identifier: NCT01056887

Univ Hospital Wuerzburg
Wuerzburg, Bavaria, Germany, 97080
Sponsors and Collaborators
University of Wuerzburg
Dr. Carson Liu Med Corp.
  More Information

Publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: Prof. Dr. med. Bruno Allolio, FDAAA Identifier: NCT01056887     History of Changes
Other Study ID Numbers: 17121979
Study First Received: January 25, 2010
Last Updated: April 22, 2011

Keywords provided by University of Wuerzburg:
diabetes insipidus
primary polydipsia
Utility of plasma copeptin in differential diagnosis of polyuria/ polydipsia while performing a traditional deprivation test

Additional relevant MeSH terms:
Urination Disorders
Urologic Diseases
Urological Manifestations
Signs and Symptoms
Pathologic Processes
Arginine Vasopressin
Vasoconstrictor Agents
Antidiuretic Agents
Natriuretic Agents
Physiological Effects of Drugs processed this record on September 21, 2017