Table 4 A comparison of the LOD, LOQ, extraction techniques, and instruments used in our study and other published methods
Urine matrix | Our results | Freire et al. 2008 | Janda and Alt 2001 | Sharma et al. 2015 | Favretto et al. 2010 | Shah and Lacourse 2006 | Beyer et al. 2011 | Broucki et al. 2005 |
|---|---|---|---|---|---|---|---|---|
Extraction technique | None | Microwave-assisted extraction | Solid-phase extraction | Solid-phase extraction | Solid-phase extraction | Solid-phase extraction | None | Cation-exchange resin |
Method | GC-MS | GC-MS | GC-MS | GC-MS | LC-MS | LC with pulsed electrochemical detection | LC-MS/MS | LC-MS/MS |
LOD (ng/ml) | 10 | 5 | 168 | 50 | 5 | 80 | 100 | Unknown |
LOQ (ng/ml) | 30 | 100 | 560 | 150 | 100 | 370 | 100 | 100 |