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Comparison of Gas Chromatography Quadrupole Time-Of-Flight and Quadrupole Orbitrap Mass Spectrometry in Anti-doping Analysis: I. Detection of Anabolic-androgenic Steroids

Abushareeda, W., Tienstra, M., Lommen, A., Blokland, M., Sterk, S., Kraiem, S., Horvatovich, P., Nielen, M., Al-Maadheed, M. & Georgakopoulos, C., 15-Dec-2018, In : Rapid Communications in Mass Spectrometry. 32, 23, p. 2055-2064 10 p.

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RATIONALE: The Worla Anti-doping Agency (WADA) encourages drug-testing laboratories to develop screening methods that can detect as many doping substances as possible in urine. The use of full-scan high-resolution acquisition (FS/HR) with GC/MS for the detection of known and unknown trimethylsilyl (TMS) derivatives of anabolic-androgenic steroids (AAS) provides anti-doping testing bodies with a new analytical tool.

METHODS: The AAS were extracted from urine samples by generic liquid-liquid extraction, after enzymatic hydrolysis, and TMS derivatization. The extracted urine was analysed by GC/Q-TOF and GC/Q-Orbitrap to compare the performance of the two instrument types for the detection of 46 AAS in human urine. The quantitation of endogenous anabolic steroids and the ability of the two analytical platforms to comply with the requirements for testing as part of the WADA Athlete Biological Passport (ABP) were also assessed.

RESULTS: The data presented shows that the analytical performance for both instruments is in compliance with the WADA specifications. The LOD (s) for both instruments are well below the WADA 50% Minimum Required Performance Levels. The mass errors in the current study for the GC/Q-Orbitrap platform are lower than those obtained for the GC/Q-TOF instrument.

CONCLUSIONS: The data presented herein proved that both molecular profiling platforms can be used for antidoping screening. The mass accuracies are excellent in both instruments; however, the GC/Q-Orbitrap performs better as it provides higher resolution than the GC/Q-TOF.

Original languageEnglish
Pages (from-to)2055-2064
Number of pages10
JournalRapid Communications in Mass Spectrometry
Volume32
Issue number23
Early online date14-Sep-2018
Publication statusPublished - 15-Dec-2018

    Keywords

  • DESIGNER STEROIDS, HUMAN URINE, IONIZATION, METABOLITES, LIQUID

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