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[Investigations concerning the threshold value between endogenous and exogenous GHB (liquid ecstasy)]
Freidoon Erdmann1, Daniel Zandt, Jürgen Auch
1Institut für Rechtsmedizin der Universität Giessen.
Archiv Fur Kriminologie
|August 17, 2006
Summary
This study investigated gamma-hydroxybutyric acid (GHB) levels in blood, establishing a threshold between natural and drug-induced concentrations. Findings reveal significantly higher GHB levels in postmortem samples compared to blood donors.
Area of Science:
- Forensic Toxicology
- Analytical Chemistry
- Pharmacology
Background:
- Gamma-hydroxybutyric acid (GHB) is an endogenous substance with potential for abuse as a recreational drug.
- Determining the threshold between endogenous and exogenous GHB concentrations is crucial for forensic investigations.
- Existing data on GHB blood levels, particularly distinguishing between natural occurrence and intoxication, requires further clarification.
Purpose of the Study:
- To establish a reliable threshold value for gamma-hydroxybutyric acid (GHB) concentrations in human blood.
- To differentiate between endogenous GHB levels in healthy individuals and exogenous levels resulting from administration.
- To provide critical data for forensic toxicology and clinical diagnostics.
Main Methods:
- Quantitative analysis of GHB concentrations in human blood samples.
- Utilized a validated gas-chromatographic/mass-spectrometric (GC/MS) method.
- Analyzed blood samples from 50 healthy blood donors and 50 postmortem cases.
Main Results:
- GHB concentrations in blood donors ranged from 0.11 to 1.56 mg/L (mean 0.54 mg/L).
- GHB concentrations in postmortem samples ranged from 2.2 to 116 mg/L (mean 32.4 mg/L).
- A clear distinction in GHB levels was observed between the donor and postmortem groups.
Conclusions:
- The study successfully identified a significant difference in GHB blood concentrations between healthy individuals and postmortem cases.
- The findings provide valuable reference values for interpreting GHB levels in forensic and clinical toxicology.
- This research aids in distinguishing between endogenous GHB and exogenous GHB, crucial for legal and medical assessments.
