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Considering that many victims of alleged drug-facilitated crimes delay reporting for hours or days after an alleged drugging, it is expected that, if GHB was used as the incapacitating agent, the exogenous GHB concentration will likely drop below the accepted 10mg/L cutoff by the time the urine sample is collected. Unfortunately, the current data do not allow one to predict the extent of an elevated concentration of GHB from in vitro production. [...]the increase in concentration during storage cannot be ignored, as delays in testing can be common.