About the Authors

Mark W. Eshoo

*mark.eshoo@abbott.com

Affiliation Ibis Biosciences Inc., an Abbott Company, Carlsbad, California, United States of America

Christopher C. Crowder

Affiliation Ibis Biosciences Inc., an Abbott Company, Carlsbad, California, United States of America

Alison W. Rebman

Affiliation Lyme Disease Research Foundation, Lutherville, Maryland, United States of America

Megan A. Rounds

Affiliation Ibis Biosciences Inc., an Abbott Company, Carlsbad, California, United States of America

Heather E. Matthews

Affiliation Ibis Biosciences Inc., an Abbott Company, Carlsbad, California, United States of America

John M. Picuri

Affiliation Ibis Biosciences Inc., an Abbott Company, Carlsbad, California, United States of America

Mark J. Soloski

Affiliation Divisions of Rheumatology and Internal Medicine, Department of Medicine, Johns Hopkins School of Medicine, Baltimore, Maryland, United States of America

David J. Ecker

Affiliation Ibis Biosciences Inc., an Abbott Company, Carlsbad, California, United States of America

Steven E. Schutzer

Affiliation Department of Medicine, University of Medicine and Dentistry of New Jersey-New Jersey Medical School, Newark, New Jersey, United States of America

John N. Aucott

Affiliation Divisions of Rheumatology and Internal Medicine, Department of Medicine, Johns Hopkins School of Medicine, Baltimore, Maryland, United States of America

Competing Interests

Mark W. Eshoo, Christopher C. Crowder, Megan A. Rounds, Heather E. Matthews, John M. Picuri and David J. Ecker are employees of Ibis Biosciences Inc., an Abbott Company the manufacturer of the PCR/ESI-MS system used in these studies. This does not alter the authors' adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: MWE CCC DJE SES JNA. Performed the experiments: CCC AWR MAR JMP MJS. Analyzed the data: AWR CCC HEM MJS. Contributed reagents/materials/analysis tools: AWR JMP JNA MJS. Wrote the paper: MWE CCC SES JNA.