CYD (Check Your Drink) is a pocket-sized drink spike test. You put a drop of your drink on two test patches and check for a colour change, usually within 15 seconds and always within 30.
The pale pink patch screens for GHB, including pharmaceutical GHB (Xyrem) and related compounds. The yellow patch screens for ketamine, scopolamine, cocaine and other amine-based drugs.
No. Extra alcohol is one of the most common ways drinks are spiked, and CYD does not test for it. If you feel far drunker than you should, get help whatever the test shows.
CYD has been tested on 92 different drinks. The ketamine test had no false positives (100% specificity) and a 2.3% false negative rate (97.67% sensitivity). The GHB test had a 4.88% combined false positive and false negative rate.
CYD was developed over four years with the University of Strathclyde and Clinical Trials Laboratory Services (CTLS), and independently tested by Lucideon.
Using your finger or a straw, put one drop of the drink on each test patch. Wait up to 30 seconds and check the colours.
It works on most alcoholic and soft drinks, but some can affect results. Milk-based drinks can affect the GHB test. Bitter lemon or lime cordial may cause a false negative on the GHB test. Dark red drinks, such as red wine or blackcurrant cordial, can interfere with both tests.
No. Each strip is single use. Wristbands have two sets of tests.
CYD tests have a shelf life of five years.
Keep tests in their original sealed foil pouches or containers, in a cool, dry, dark place. Moisture, heat or direct sunlight can damage the chemical reagents on the pads and cause false or invalid readings.
The pink patch turns blue or pale grey (GHB), or the yellow patch turns orange (ketamine and other amine-based drugs).
Don't drink it. Keep the drink if you can, as it may be evidence. Tell a friend and a member of staff, and report it to the police.
Not necessarily. CYD is an indicator screening test, not a laboratory test. It won't detect substances outside its range or amounts below detectable levels. If in doubt, don't drink it.
Stop drinking and keep the drink if you can. Tell someone you trust, such as a friend, bar staff or security, and don't leave with anyone you don't know. If you or someone else is very unwell, call 999 or go to A&E, and take your CYD result with you. Report it to the police as soon as you can: GHB leaves the body within about 6 to 12 hours, so samples need to be taken quickly.
Yes. Adding alcohol or drugs to someone's drink without their knowledge is illegal, including "as a joke". The victim is never to blame.
Victim Support offers a free 24/7 Supportline on 08 08 16 89 111 (England and Wales), whether or not you've reported it. Rape Crisis England & Wales runs a free 24/7 Support Line on 0808 500 2222 for anyone aged 16+ affected by sexual violence. If you're abroad, contact local emergency services or the British Embassy.
The CYD Pouch (5 strips) fits behind a phone case for everyday carry. The CYD Matchbook and Black Matchbook (8 strips) fit in a pocket, wallet or phone case. The CYD Wristband (2 sets of tests) is ideal for festivals, concerts and weekend events.
UK orders are dispatched within 24 hours and arrive within 48 hours. International delivery times depend on where you are.
Yes, if the products are unopened and unused.
Email info@checkyourdrink.co.uk.