Determination of testosterone esters and nortestosterone esters in animal blood serum by LC-MS/MS
Jazyk angličtina Země Velká Británie, Anglie Médium print-electronic
Typ dokumentu časopisecké články
- Klíčová slova
- LC-MS/MS, Steroid esters, blood serum, natural hormones,
- MeSH
- chromatografie kapalinová MeSH
- estery krev MeSH
- nandrolon krev MeSH
- prasata MeSH
- skot MeSH
- tandemová hmotnostní spektrometrie MeSH
- testosteron krev MeSH
- zvířata MeSH
- Check Tag
- skot MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- Názvy látek
- estery MeSH
- nandrolon MeSH
- testosteron MeSH
A sensitive and robust confirmatory method for determination of steroid esters in blood serum is essential for reliable monitoring of possible illegal use of steroid hormones as growth promoters in meat production. A previously used sample preparation methodology was improved. The procedure consists of protein precipitation and removal of phospholipids by dispersive SPE Supel™ QuE Z-Sep (Sigma-Aldrich) followed by clean-up on alumina column and LC-MS/MS measurement. The modified method has been validated according to Commission Decision 2002/657/EC. Validation parameters for determination of six testosterone esters and five nortestosterone esters in bovine and porcine blood serum are presented in this article. Decision limits for all analytes were observed in the range 10-20 pg mL-1. The method described is considerably robust for bovine and porcine serum analyses and can be applied both for screening and confirmatory determination in routine residue monitoring.
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