Evidence map›Paper›PMID 38939690›Full record

ArticleJournal of extracellular biology2023

Standardising the preanalytical reporting of biospecimens to improve reproducibility in extracellular vesicle research - A GEIVEX study.

José A López-Guerrero, Mar Valés-Gómez, Francesc E Borrás, Juan Manuel Falcón-Pérez, María J Vicent, María Yáñez-Mó

Erratum issuedAbstract read
In one paragraph

Article in Journal of extracellular biology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 25 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 1 pooled it
–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

25 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Review
  3. Article
  4. Article
  5. Review
  6. Review
  7. Review
  8. Article
  9. Review
  10. Article
  11. Review
  12. Standard PREanalytical Code Version 4.0.Biopreservation and biobanking · 2025
    Article
  13. Article
  14. Review
  15. Cholangiocarcinoma: The era of liquid biopsy.World journal of gastroenterology · 2025
    Review
  16. Review
  17. Article
  18. Reproducibility of extracellular vesicle research.Journal of extracellular vesicles · 2025
    Article
  19. Review
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors.

José A López-GuerreroLaboratory of Molecular Biology Fundación Instituto Valenciano de Oncología Valencia Spain.ORCID https://orcid.org/0000-0002-7369-8388
Mar Valés-GómezDepartment of Immunology and Oncology, National Centre for Biotechnology Spanish National Research Council Madrid Spain.
Francesc E BorrásREMAR-IVECAT Group, Germans Trias i Pujol Research Institute (IGTP) & Nephrology Department, University Hospital Germans Trias i Pujol (HUGTiP) Can Ruti Campus Barcelona Spain.
Juan Manuel Falcón-PérezExosomes Laboratory and Metabolomics Platform CIC bioGUNE-BRTA Derio Spain.ORCID https://orcid.org/0000-0003-3133-0670
María J VicentPolymer Therapeutics Lab. Centro de Investigación Príncipe Felipe (CIPF) Valencia Spain.ORCID https://orcid.org/0000-0001-7771-3373
María Yáñez-MóDepartment of Molecular Biology, University Institute of Molecular Biology (IUBM), Autonomous University of Madrid (UAM), Severo Ochoa Center for Molecular Biology La Princesa Health Research Institute (IIS-IP) Madrid Spain.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The standardization of clinical studies using extracellular vesicles (EVs) has mainly focused on the procedures employed for their isolation and characterization; however, preanalytical aspects of sample collection, handling and storage also significantly impact the reproducibility of results. We conducted an online survey based on SPREC (Standard PREanalytical Code) among members of GEIVEX (Grupo Español de Investigación en Vesiculas Extracelulares) to explore how different laboratories handled fluid biospecimens destined for EV analyses. We received 70 surveys from forty-three different laboratories: 44% focused on plasma, 9% on serum and 16% on urine. The survey indicated that variability in preanalytical approaches reaches 94%. Moreover, in some cases, researchers had no access to all relevant preanalytical details of samples, with some sample aspects with potential impact on EV isolation/characterisation not coded within the current version of SPREC. Our study highlights the importance of working with common standard operating procedures (SOP) to control preanalytical conditions. The application of SPREC represents a suitable approach to codify and register preanalytical conditions. Integrating SPREC into the SOPs of laboratories/biobanks will provide a valuable source of information and constitute an advance for EV research by improving reproducibility and credibility.

Indexed as

biobankingbiomarkersextracellular vesiclespreanalyticsSPRECstandardisation

Identifiers

PMID38939690
PMCPMC11080825

What OpenQuestion holds

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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.