Liquid extraction surface analysis field asymmetric waveform ion mobility spectrometry mass spectrometry for the analysis of dried blood spots

Analyst. 2015 Oct 21;140(20):6879-85. doi: 10.1039/c5an00933b. Epub 2015 Jul 22.

Abstract

Liquid extraction surface analysis (LESA) is a surface sampling technique that allows electrospray mass spectrometry analysis of a wide range of analytes directly from biological substrates. Here, we present LESA mass spectrometry coupled with high field asymmetric waveform ion mobility spectrometry (FAIMS) for the analysis of dried blood spots on filter paper. Incorporation of FAIMS in the workflow enables gas-phase separation of lipid and protein molecular classes, enabling analysis of both haemoglobin and a range of lipids (phosphatidylcholine or phosphatidylethanolamine, and sphingomyelin species) from a single extraction sample. The work has implications for multiplexed clinical assays of multiple analytes.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Dried Blood Spot Testing / methods*
  • Hemoglobins / analysis
  • Hemoglobins / isolation & purification
  • Humans
  • Lipids / blood
  • Lipids / isolation & purification
  • Liquid-Liquid Extraction / methods*
  • Mass Spectrometry / methods*
  • Surface Properties

Substances

  • Hemoglobins
  • Lipids