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http://www.abc.net.au/centralvic/stories/s907377.htm

 

 

ABC Central Victoria
July 21 2003

Drink spiking - a reality or urban myth?

While warnings about drug-spiked drinks are commonplace, how common are the incidents which give rise to them?

Over the years, much has been made of the practice of spiking drinks - whether with extra, unsuspected alcohol, or with drugs, including 'date rape' drug, Rohypnol.

With several awareness campaigns being run over the years, and another about to start, Robert Hanson - a chemist and toxicologist with the Forensic Science Laboratory at the Chemistry Centre in Perth - says the idea of drug-spiked drinks is more urban myth than reality.

Mr Hanson explains that the Chemistry Centre is a government agency which has, at the request of the Western Australian police, been conducting a long-term study into drink-spiking.

"We've been doing it now for about 18 months and, of all the samples [where] the victims have requested police involvement, we have yet to find any drug - or sedating drug - which would be indicative of the drink-spiking type crime."

He says the majority of samples taken were within 24 hours of the claimed offence, but that, for technical purposes, they'd like to see people report sooner, within 12 hours. The sooner a crime is reported, the better the chance of tests revealing the presence of any illicit drugs used.

"Drugs like Ketamine are very detectable; benzodiazepans are detectable. However GHB, which is known as 'Fantasy', has a very short half-life and the detection limit of that would be dependent upon early reporting and sampling."

The most infamous of the 'date rape drugs', Rohypnol, didn't come up in the survey at all, despite being targeted. "Rohypnol's been off the market since about 1997," Mr Hanson says.

If spiking is going on, it seems to be with alcohol - people thinking they're consuming single nips, when they're actually drinking a double, or stronger, mix.

"We've correlated the alcohol levels found in the victims, and we've compared that to the alleged amount of alcohol consumed," he says. "And by far and away, the alcohol level found in the blood samples was far in excess of that which would be calculated based on consumption."

Perhaps that result is not surprising. Alcohol is legal, readily available and relatively cheap. Add to that, it can be difficult to effectively spike a drink with a powdered drug made from commercially available tablets, since those tablets are made up largely of inert, insoluble material that leaves a visible residue.

"We've basically declared it [drug spiking] an urban myth," Mr Hanson says. "We believe it's just an excuse to hide abhorrent behaviour or inexperienced drinking, as a way of explaining, or trying to explain away, what young people were doing when they shouldn't be."

Mr Hanson says the research will continue for another year or 18 months.