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Simultaneous determination of trimethoprim and sulfamethoxazole in dried plasma and urine spots

  • Daniel Gonzalez
  • , Chiara Melloni
  • , Brenda B. Poindexter
  • , Ram Yogev
  • , Andrew M. Atz
  • , Janice E. Sullivan
  • , Susan R. Mendley
  • , Paula Delmore
  • , Amy Delinsky
  • , Kanecia Zimmerman
  • , Andrew Lewandowski
  • , Barrie Harper
  • , Kenneth C. Lewis
  • , Daniel K. Benjamin
  • , Michael Cohen-Wolkowiez
  • , K. Y. Berezny
  • , E. Capparelli
  • , G. L. Kearns
  • , M. Laughon
  • , A. Muelenaer
  • T. M. O'Shea, I. M. Paul, P. B. Smith, J. Van Den Anker, K. Wade, T. J. Walsh, D. Siegel, P. Taylor-Zapata, A. Zajicek, Z. Ren, K. Tsilou, A. Pagan, R. Anand, G. Simone, A. Lewandowski, B. Harper, L. Smiley, R. Yogev, L. Fern, H. Al Nasiri, J. Sullivan, T. Bratton, Donna Cannonier

Research output: Contribution to journalArticlepeer-review

Abstract

Background: Trimethoprim-sulfamethoxazole (TMP-SMX) is an antimicrobial drug combination commonly prescribed in children and adults. The study objectives were to validate and apply an HPLC-MS/MS method to quantify TMP-SMX in dried plasma spots (DPS) and dried urine spots (DUS), and perform a comparability analysis with liquid matrices. Results: For TMP the validated range was 100-50,000 ng/ml for DPS and 500-250,000 ng/ml for DUS; for SMX, the validated range was 1000-500,000 ng/ml for both DPS and DUS. Good agreement was noted between DPS/DUS and liquid plasma and urine samples for TMP, while only modest agreement was observed for SMX in both matrices. Conclusion: A precise, accurate and reproducible method was developed to quantify TMP-SMX in DPS and DUS samples.

Original languageEnglish (US)
Pages (from-to)1137-1149
Number of pages13
JournalBioanalysis
Volume7
Issue number9
DOIs
StatePublished - May 1 2015

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • General Pharmacology, Toxicology and Pharmaceutics
  • Clinical Biochemistry
  • Medical Laboratory Technology

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