- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01575392
Quality Assessment Creatinines in Plasma and Urine
Quality Assessment of Creatinines in Plasma and Urine
Study Overview
Status
Conditions
Detailed Description
Apart from the 24-hour creatinine clearance, also formulas to estimate the glomerular filtration rate (GFR) are increasingly used to get an impression from renal function in recent years. Based on these renal function measurements, clinical decisions are made as well as drug dose adjustments. The use of reliable serum creatinine measurements is therefore important to get accurate renal function estimates. However, serum creatinine is one of the most variable routine laboratory tests.
The importance of calibration to a traceable reference measurement of serum creatinine has been stressed. However, this standardization does not correct for analytical non-specificity problems, which occurs in certain techniques to measure creatinine, leading to under- or overestimation of the true creatinine concentration.
The aim of this cross-sectional observational study is to examine the degree of variability between diverse methods to measure creatinine in plasma and urine in a heterogenous group of Caucasian people with and without renal function loss and the influence hereof on the 24-hour creatinine clearance and the Modification of Diet in Renal Disease study equation and the consequences for chronic kidney disease staging.
Study Type
Enrollment (Actual)
Contacts and Locations
Study Locations
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Zwolle, Netherlands
- Isala Clinics
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- All patients >18 years presenting at the laboratory facility for a 24-hour creatinine clearance, or
- Persons >18 years, undergoing a renal replacing therapy by means of hemo-/peritoneal dialysis that had a KT/V appointment between May 2010 - January 2011
Exclusion Criteria:
- Patients <18 years
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
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Patients coming for creatinine clearance
For this single group study, all patients presenting at the laboratory facility for a 24-hour creatinine clearance and patients in the dialysis population of the Isala Clinics who came for their periodical KT/V control, were informed about the study and asked to participate.
Moreover, 20 'healthy' volunteers (including the investigators of this study and staff working at the clinical chemistry department of the Isala clinics) participated in this study.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
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To investigate the bias and precision between routine laboratory techniques to measure creatinine in plasma, urine and dialysate when compared to the gold standard to measure creatinine.
Time Frame: 6 months (plasma, urine and dialysate samples are collected only once during the running of the study)
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Creatinine concentrations of plasma, urine and/or dialysate samples will be measured using different techniques applied in daily clinical practice (jaffe, enzymatic and HPLC).
For each participant creatinine will also be measured using the gold standard measure LC-MS.
LCMS values will be used as reference method against which routine methods will be compared by means of absolute bias and precision per method group.
Absolute bias is the mean difference between SCr values measured by individual laboratories and SCr target values; precision is defined as the SD of the absolute bias.
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6 months (plasma, urine and dialysate samples are collected only once during the running of the study)
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Collaborators and Investigators
Investigators
- Principal Investigator: I Drion, MD, Diabetes Centre, Isala Clinics, Zwolle, the Netherlands
- Study Director: Henk JG Bilo, Prof, Diabetes Centre, Isala Clinics, Zwolle, the Netherlands
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- Krabbe_trial
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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