About the Authors

Mark W. Eshoo

mark.eshoo@abbott.com

Affiliation Ibis Biosciences, an Abbott Company, Carlsbad CA, United States of America

Heather E. Carolan

Affiliation Ibis Biosciences, an Abbott Company, Carlsbad CA, United States of America

Christian Massire

Affiliation Ibis Biosciences, an Abbott Company, Carlsbad CA, United States of America

Danny M. Chou

Affiliation Ibis Biosciences, an Abbott Company, Carlsbad CA, United States of America

Chris D. Crowder

Affiliation Ibis Biosciences, an Abbott Company, Carlsbad CA, United States of America

Megan A. Rounds

Affiliation Ibis Biosciences, an Abbott Company, Carlsbad CA, United States of America

Curtis A. Phillipson

Affiliation Ibis Biosciences, an Abbott Company, Carlsbad CA, United States of America

Steven E. Schutzer

Affiliation Rutgers New Jersey Medical School, Dept. of Medicine, Newark, New Jersey, United States of America

David J. Ecker

Affiliation Ibis Biosciences, an Abbott Company, Carlsbad CA, United States of America

Competing Interests

MWE, CDC, DMC, CM, CAP, HEC, MAR, and DJE are all employees of Ibis Biosciences, an Abbott Company, which developed the PCR/ESI-MS assays and instrumentation used in these studies.

Author Contributions

Conceived and designed the experiments: MWE DJE SES HEC DMC CDC CM. Performed the experiments: DMC CDC MAR CAP. Analyzed the data: MWE HEC CM CDC MAR DMC. Contributed reagents/materials/analysis tools: CDC DMC CM. Wrote the paper: MWE CM HEC DMC.