|Articles|September 8, 2020

Analysis of Gamma-Hydroxybutyrate (GHB) in Whole Blood Using Quicker SPE and LC-MS/MS

Analysis of GHB demands for an analytical procedure that is quick, efficient, and one that preserves the authenticity of the sample. A method for the quantitation of GHB in human blood is presented using SPE with LC-MS/MS analysis.


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Figure 2. Split injection used to measure triplicate test of MTBE, hexane, o-xylene, and 1-methylnaphthalene comparing different solvents (methanol, methylene chloride) and column insertion distances starting with 0.5 mm, 5.0 mm, 10.0 mm, 15 mm, and 20.0 mm. Methanol had the best performance at the 5.0 mm insertion distance and methylene chloride looked slightly better at the 0.5 mm. We would still recommend not going below the 5.0 mm manufacturer recommended insertion distance.
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