Drug checking or pill testing, as it is known in the Southern Hemisphere, is a way to reduce the harm from drug consumption by allowing users to find out the content and purity of substances that they intend to consume. This empowers users to make safer choices: to avoid more dangerous substances, to use smaller quantities, and to avoid dangerous combinations.
Drug checking services have developed over the last twenty-five years in twenty countries and are being considered in more countries, although attempts to implement them in some countries have been hindered by local laws. Drug checking initially focused on MDMA users in electronic dance music events but the services have broadened as drug use has become more complex. These developments have been strongly affected by local laws and culture, resulting in a diverse range of services, both for mobile services that attend events and festivals and fixed sites in town centres and entertainment districts. For instance, staff may or may not be able to handle illegal substances, which limits the use of testing techniques to those where the staff are not legally in possession of those substances.
People intending to take drugs provide a small sample to the testing service (often less than a single dose). Test results may be provided immediately, after a short waiting period, or later. Drug checking services use this time to discuss health risks and safe behaviour with the service users. The services also provide public health information about drug use, new psychoactive substances and trends at a national level.
The earliest reported drug checking service is the Drug Information and Monitoring System (DIMS) in the Netherlands supported by the Ministry of Health, Welfare and Sport. Since 1992 the service has tested over 100,000 drug samples at a national network of twenty-three testing facilities. Service users receive results within a week via phone or email and the service publishes aggregated results describing what substances are in use.
European countries have led the introduction of drug checking services, with Asociación Hegoak Elkartea founded in Spain in 1994, TechnoPlus in France founded in 1995, and Modus Fiesta in Belgium in 1996. DanceSafe have operated in the USA since 1998 providing reagent testing and harm reduction advice.
On March 31st 2017 a coalition of drug safety organisations hosted the first-ever International Drug Checking Day to raise awareness of safer drug use. The initiative was aimed at recreational users, with a particular emphasis on the nightlife community, and aims to promote harm reduction—accepting that people will choose to take drugs, and providing them with tools to minimise the risks.
Approaches to drug checkingEdit
Front-of-house testing provides testing services to clients at events. It provides real-time, as-you-wait results. An example is the testing at BOOM festival in Portugal where drug testers are legally allowed to handle samples. Where testers are not allowed to handle samples, for fear of breaking laws around possession, clients themselves must handle the substance to be tested. Examples of this model are KnowYourStuffNZ in New Zealand and ChEck iT! in Austria.
Back-of-house testing is more restrictive. The substances tested do not come directly from event participants. Instead, they may come from samples confiscated by Police or event security or samples that are disposed of into drug amnesty bins. The results may not be available to event attendees.
Middle-of-house testing is a new development, started by The Loop in the UK. Testing happens on-site but without face-to-face interaction with clients. Clients drop off samples to be tested and then return to find out the testing results.
Testing outside eventsEdit
Static testing sites provide testing services to clients at fixed locations away from events. Often these are in the entertainment districts of cities. Energy Control in Barcelona and DIMS in the Netherlands provide such services.
Off-site testing occurs away from events and away from clients. Clients submit samples by post or at drop-off locations. Those samples are analysed and then the results are publicised. Examples of this model include WEDINOS (the Welsh Emerging Drugs & Identification of Novel Substances Project) and DIMS in the Netherlands.
A range of analysis techniques are in use by drug checking service. The most common are reagent testing, Fourier transform infrared spectroscopy, ultraviolet-visible spectroscopy, Raman spectroscopy, and gas chromatography mass spectroscopy. Developing technologies include nuclear magnetic resonance spectroscopy and ion-trap mass spectroscopy.
Reagent testing uses chemical indicators that show a colour change in the presence of particular drugs. These tests are widely available and affordable. The use of several reagents is generally necessary to positively identify a substance with Marquis, Mandelin, and Mecke reagents being used to detect MDMA and Ehrlich's reagent common for detecting LSD. However, reagent testing only indicates the presence of a substance, not the absence of contaminants or other substances. This can provide a false sense of security when illicit drugs are deliberately adulterated to fool reagent tests.
The presence of specific drugs can also be detected through immunoassy testing strips. Testing strips for fentanyl can detect a few tens of nanograms of the substance at a price of a few dollars per test.
Fourier transform infrared spectroscopy is a rapid test using robust hardware that can be carried out in the field. It provides sample identification and mixture analysis, allowing the detection of impurities and adulterants. It is highly sensitive and can carry out analysis using only a few milligrams of a sample. It is semi-quantitative and can provide an indication of purity. For these reasons, it is widely used by both fixed and mobile testing services and considered the best technology to use.
Gas chromatography mass spectroscopy provides very sensitive and quantified information about substances. However, the high price and delicate equipment generally limit the use of this technique to fixed sites.
Effectiveness of drug checkingEdit
Drug checking has been shown to be an effective way to reduce the harm from drug use through informing safer use, limiting use, and helping users avoid the most dangerous substances. The services also provide monitoring and detection of new psychoactive substances to inform public health interventions. The Loop have stated that 20% of samples are handed in for disposal and 40% of service users reduce intake. KnowYourStuffNZ have found that, when substances are not as expected, half of service users state they will not take that substance and a quarter say they will take a smaller quantity. Drug checking services also reach drug users who are not reached by existing services. Evidence from research conducted by Austrian pill testing service CheckIt! found 58% of people who use the service would not otherwise seek out harm reduction information, and about 75% are more likely to access harm reduction services if pill testing is included.
Academic research from the UK has found that one in five substances were not what they were expected to be and two-thirds of misrepresented samples were disposed of. Such on-site testing accesses otherwise hard-to-reach user groups to reduce the harms associated with drug use.
In a peer-reviewed study published in Journal of Psychopharmacology, researchers at Johns Hopkins found that people were about half as likely (relative risk = 0.56) to report intent to use a product if testing did not identify the substance as MDMA, and this was a statistically significant reduction.
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