Exploring phlebotomy technique as a pre-analytical factor in proteomic analyses by mass spectrometry

Andrew M. Penn, Linghong Lu, Andrew G. Chambers, Robert F. Balshaw, Jaclyn L. Morrison, Kristine Votova, Eileen Wood, Derek S. Smith, Maria Lesperance, Gregory J. Del Zoppo, Christoph H. Borchers

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Multiple reaction monitoring mass spectrometry (MRM-MS) is an emerging technology for blood biomarker verification and validation; however, the results may be influenced by pre-analytical factors. This exploratory study was designed to determine if differences in phlebotomy techniques would significantly affect the abundance of plasma proteins in an upcoming biomarker development study. Blood was drawn from 10 healthy participants using four techniques: (1) a 20-gauge IV with vacutainer, (2) a 21-gauge direct vacutainer, (3) an 18-gauge butterfly with vacutainer, and (4) an 18-gauge butterfly with syringe draw. The abundances of a panel of 122 proteins (117 proteins, plus 5 matrix metalloproteinase (MMP) proteins) were targeted by LC/MRM-MS. In addition, complete blood count (CBC) data were also compared across the four techniques. Phlebotomy technique significantly affected 2 of the 11 CBC parameters (red blood cell count, p = 0.010; hemoglobin concentration, p = 0.035) and only 12 of the targeted 117 proteins (p < 0.05). Of the five MMP proteins, only MMP7 was detectable and its concentration was not significantly affected by different techniques. Overall, most proteins in this exploratory study were not significantly influenced by phlebotomy technique; however, a larger study with additional patients will be required for confirmation.

Original languageEnglish
Pages (from-to)569-576
Number of pages8
JournalGenome
Volume58
Issue number12
DOIs
Publication statusPublished - 5 Aug 2015
Externally publishedYes

Keywords

  • Biomarkers
  • Mass spectrometry
  • Multiple reaction monitoring
  • Plasma
  • Proteomics

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