 
            
        This is an Application Brief and does not contain a detailed Experimental section.
This application brief highlights the analysis of GHB and GBL in human urine using XTerra MS C18 Columns.
The compounds analyzed in this study are:
 
            
        | Column: | XTerra MS C18 2.1 x 250 mm, 5 µm | 
| Part number: | 186000458 | 
| Mobile phase A: | 0.1% HCOOH | 
| Mobile phase B: | MeOH | 
| Isocratic mobile phase composition: | 90%A; 10%B | 
| Flow rate: | 0.2 mL/min | 
| Injection volume: | 10 µl | 
| Detection: | MS ESI+ | 
| Instrument: | Alliance 2695, Micromass ZQ | 
 
            
         
            
        WA20738.060, June 2002