Evidence map›Paper›PMID 27980503›Full record

ArticleMetabolomics : Official journal of the Metabolomic Society2017

Stability of targeted metabolite profiles of urine samples under different storage conditions.

Markus Rotter, Stefan Brandmaier, Cornelia Prehn, Jonathan Adam, Sylvia Rabstein, Katarzyna Gawrych, Thomas Brüning, Thomas Illig, Heiko Lickert, Jerzy Adamski and 1 more

Open access · hybridAbstract read
In one paragraph

Article in Metabolomics : Official journal of the Metabolomic Society, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed, 1 pooled it
3.8field-weighted citation impact, top 6% of its field
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

36 citing papers in PubMed, 1 synthesis or guideline pooled it, 74 citations in OpenAlex.

  1. Pooled it
  2. Article
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  4. Cortisol Stability at 16 and 30 Years in Urine Specimens Stored at -20°C.American journal of human biology : the official journal of the Human Biology Council · 2026
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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

11 authors at 2 institutions in 1 country.

Markus RotterResearch Unit of Molecular Epidemiology, Helmholtz Zentrum München, 85764 München-Neuherberg, Germany ; Institute of Epidemiology II, Helmholtz Zentrum München, 85764 München-Neuherberg, Germany.
Stefan BrandmaierResearch Unit of Molecular Epidemiology, Helmholtz Zentrum München, 85764 München-Neuherberg, Germany ; Institute of Epidemiology II, Helmholtz Zentrum München, 85764 München-Neuherberg, Germany.
Cornelia PrehnGenome Analysis Center, Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764 München-Neuherberg, Germany.
Jonathan AdamResearch Unit of Molecular Epidemiology, Helmholtz Zentrum München, 85764 München-Neuherberg, Germany ; Institute of Epidemiology II, Helmholtz Zentrum München, 85764 München-Neuherberg, Germany.
Sylvia RabsteinInstitute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr University Bochum (IPA), 44789 Bochum, Germany.
Katarzyna GawrychInstitute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr University Bochum (IPA), 44789 Bochum, Germany.
Thomas BrüningInstitute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr University Bochum (IPA), 44789 Bochum, Germany.
Thomas IlligResearch Unit of Molecular Epidemiology, Helmholtz Zentrum München, 85764 München-Neuherberg, Germany ; Hannover Unified Biobank, Hannover Medical School, 30625 Hannover, Germany.
Heiko LickertInstitute of Diabetes and Regeneration Research, Helmholtz Zentrum München, 85764 München-Neuherberg, Germany ; Institute of Stem Cell Research, Helmholtz Zentrum München, 85764 München-Neuherberg, Germany ; German Center for Diabetes Research (DZD), 85764 München-Neuherberg, Germany.
Jerzy AdamskiGenome Analysis Center, Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764 München-Neuherberg, Germany ; German Center for Diabetes Research (DZD), 85764 München-Neuherberg, Germany ; Experimental Genetics, Center of Life and Food Sciences Weihenstephan, Technische Universität München, 85354 Freising-Weihenstephan, Germany.
Rui Wang-SattlerResearch Unit of Molecular Epidemiology, Helmholtz Zentrum München, 85764 München-Neuherberg, Germany ; Institute of Epidemiology II, Helmholtz Zentrum München, 85764 München-Neuherberg, Germany ; German Center for Diabetes Research (DZD), 85764 München-Neuherberg, Germany.
Helmholtz Zentrum München · DEInstitute for Prevention and Occupational Medicine · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionFew studies have investigated the influence of storage conditions on urine samples and none of them used targeted mass spectrometry (MS).

objectivesWe investigated the stability of metabolite profiles in urine samples under different storage conditions using targeted metabolomics.

methodsPooled, fasting urine samples were collected and stored at -80 °C (biobank standard), -20 °C (freezer), 4 °C (fridge), ~9 °C (cool pack), and ~20 °C (room temperature) for 0, 2, 8 and 24 h. Metabolite concentrations were quantified with MS using the AbsoluteIDQ™ p150 assay. We used the Welch-Satterthwaite-test to compare the concentrations of each metabolite. Mixed effects linear regression was used to assess the influence of the interaction of storage time and temperature.

resultsThe concentrations of 63 investigated metabolites were stable at -20 and 4 °C for up to 24 h when compared to samples immediately stored at -80 °C. When stored at ~9 °C for 24 h, few amino acids (Arg, Val and Leu/Ile) significantly decreased by 40% in concentration (

conclusionOur findings indicate that 78% of quantified metabolites were stable for all examined storage conditions. Particularly, some amino acid concentrations were sensitive to changes after prolonged storage at room temperature. Shipping or storing urine samples on cool packs or at room temperature for more than 8 h and multiple numbers of freeze and thaw cycles should be avoided.

Indexed as

Amino acidsPre-analyticsStorage conditionsTargeted metabolomicsUrine

Identifiers

PMID27980503
PMCPMC5126183
OpenAlexW2557712094

What OpenQuestion holds

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Registered trials

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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.