Evidence map›Paper›PMID 42029072›Full record

ReviewNephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association2026

Recommendations for pre-analytical urine sample handling to allow optimal assessment of albuminuria and proteinuria.

Stefan Ridderbos, Dominique van Mil, Bengt Fellström, Barbara S Gillespie, William G Herrington, Lilio Hu, Gaetano La Manna, Maaike Mepschen, W Greg Miller, Mauro Panteghini and 6 more

Abstract readReview
In one paragraph

Review in Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Reconsidering the measurement of urinary proteins in chronic kidney disease: towards a global consensus on albuminuria assessment.Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association · 2026
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

16 authors.

Stefan RidderbosGroningen Kolff Centre for Kidney Research, Department of Nephrology, University Medical Centre Groningen, Groningen, the Netherlands.ORCID 0009-0003-2730-9788
Dominique van MilGroningen Kolff Centre for Kidney Research, Department of Nephrology, University Medical Centre Groningen, Groningen, the Netherlands.ORCID 0000-0002-3477-9310
Bengt FellströmDivision of Renal Medicine, Department of Medical Sciences, Uppsala University, Uppsala, Sweden.
Barbara S GillespieDivision of Nephrology and Hypertension, University of North Carolina, Chapel Hill, NC, USA.
William G HerringtonRenal Studies Group, Clinical Trial Service Unit and Epidemiological Studies Unit, Nuffield Department of Population Health, University of Oxford, Oxford, UK.ORCID 0000-0003-1172-8243
Lilio HuDepartment of Medical and Surgical Science (DIMEC), Alma Mater Studiorum-University of Bologna, Bologna, Italy.
Gaetano La MannaDepartment of Medical and Surgical Science (DIMEC), Alma Mater Studiorum-University of Bologna, Bologna, Italy.ORCID 0000-0001-5473-8551
Maaike MepschenGroningen Kolff Centre for Kidney Research, Department of Nephrology, University Medical Centre Groningen, Groningen, the Netherlands.
W Greg MillerDepartment of Pathology, Virginia Commonwealth University, Richmond, VA, USA.
Mauro PanteghiniDepartment of Laboratory Medicine, Ludwik Rydygier Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, Torun, Poland.ORCID 0000-0002-7147-3433
Michele ProvenzanoDepartment of Medical and Surgical Science (DIMEC), Alma Mater Studiorum-University of Bologna, Bologna, Italy.
Jesse C SeegmillerDepartment of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN, USA.
Joseph A VassalottiNational Kidney Foundation, Inc., NY, NY, USA.
Hiddo J L HeerspinkGroningen Kolff Centre for Kidney Research, Department of Nephrology, University Medical Centre Groningen, Groningen, the Netherlands.ORCID 0000-0002-3126-3730
Ron T GansevoortGroningen Kolff Centre for Kidney Research, Department of Nephrology, University Medical Centre Groningen, Groningen, the Netherlands.ORCID 0000-0002-3223-0906
USA NKF Albuminuria–Proteinuria Workshop participants

Funding

STADAPHARM GmbH
6 · The paper itself

Abstract

Albuminuria and proteinuria are key biomarkers for diagnosing, staging, and monitoring of chronic kidney disease. Both are also strongly associated with renal and cardiovascular risk. Given their important diagnostic role, reliable measurement of urinary albumin and protein is essential for clinical practice and trials. However, variability in the methodology presently used to collect, store, and prepare urine samples may influence assay performance and contribute to inconsistent results. In response to a call for harmonization, the United States of America National Kidney Foundation organized a workshop in April 2025 to define optimal methods and practices for measuring albuminuria and proteinuria. As part of this initiative, the available evidence on pre-analytical factors affecting urinary albumin and protein measurements was discussed. For this purpose, a narrative literature review was conducted to identify relevant studies focusing on urine collection strategies, including 24-h versus single-void samples, timing of sample collection, the need for repeated measurements, clinical conditions that may cause false-positive results, and the effects of sample storage and handling under various temperature conditions. Given heterogeneity in study designs and outcome measures, findings were synthesized qualitatively. This consensus report summarizes the findings of this literature review and the resulting discussion. It highlights the importance of standardized urine collection and handling procedures to minimize biological and analytical variability. In addition, it provides practical recommendations.

Indexed as

AlbuminuriaBiomarkersProteinuriaSpecimen HandlingUrinalysisUrine Specimen CollectionHumansBiomarkersalbuminalbuminuriaCKDcreatinineproteinuria

Identifiers

PMID42029072
PMCPMC13503112

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.