EuPA Open Proteomics (Sep 2015)

Inter-laboratory evaluation of instrument platforms and experimental workflows for quantitative accuracy and reproducibility assessment

  • Andrew J. Percy,
  • Jessica Tamura-Wells,
  • Juan Pablo Albar,
  • Kerman Aloria,
  • Ardeshir Amirkhani,
  • Gabriel D.T. Araujo,
  • Jesus M. Arizmendi,
  • Francisco J. Blanco,
  • Francesc Canals,
  • Jin-Young Cho,
  • Núria Colomé-Calls,
  • Fernando J. Corrales,
  • Gilberto Domont,
  • Guadalupe Espadas,
  • Patricia Fernandez-Puente,
  • Concha Gil,
  • Paul A. Haynes,
  • Maria Luisa Hernáez,
  • Jin Young Kim,
  • Arthur Kopylov,
  • Miguel Marcilla,
  • Mathew J. McKay,
  • Mehdi Mirzaei,
  • Mark P. Molloy,
  • Leanne B. Ohlund,
  • Young-Ki Paik,
  • Alberto Paradela,
  • Mark Raftery,
  • Eduard Sabidó,
  • Lekha Sleno,
  • Daniel Wilffert,
  • Justina C. Wolters,
  • Jong Shin Yoo,
  • Victor Zgoda,
  • Carol E. Parker,
  • Christoph H. Borchers

DOI
https://doi.org/10.1016/j.euprot.2015.06.001
Journal volume & issue
Vol. 8, no. C
pp. 6 – 15

Abstract

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The reproducibility of plasma protein quantitation between laboratories and between instrument types was examined in a large-scale international study involving 16 laboratories and 19 LC–MS/MS platforms, using two kits designed to evaluate instrument performance and one kit designed to evaluate the entire bottom-up workflow. There was little effect of instrument type on the quality of the results, demonstrating the robustness of LC/MRM-MS with isotopically labeled standards. Technician skill was a factor, as errors in sample preparation and sub-optimal LC–MS performance were evident. This highlights the importance of proper training and routine quality control before quantitation is done on patient samples.

Keywords