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Odujebe O, Landman A, Hoffman RS. 
“GHB urine concentrations after single-dose administration in humans”. 
J Anal Toxicol. 2007 Apr 20;31(3):179 author reply 179.
We enjoyed reading Haller et al. recent evaluation of a novel assay to detect urine gamma hydroxybutyrate GHB concentrations 1. Although this study was well-designed, using a double-blind, four-arm, crossover design, we have some concerns over their results.
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