Stability of endogenous GHB in vitreous humour vs peripheral blood in dead bodies

For the first time, the stability of GHB was tested in post-mortem peripheral blood and vitreous humor samples, collected from 22 dead bodies at two different times: at the external body examination at the place of death and then during autopsy.An ad hoc method for the detection and quantification of GHB in vitreous humor by gas chromatography coupled to mass spectrometry (GC-MS) was developed and validated, with a good linearity between 0.1 and 50μg/mL (r2=0.991) and a precision and accuracy always better than 10% and an analytical recovery higher than 90%.

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