Drug Detection Window Calculator
Choose a substance, how often it's used and when it was last taken to see whether it's likely to show up on a urine, saliva, hair or blood test.
Typical detection times for every substance
One-off use shown first, regular or heavy use underneath. Individual results vary.
These are typical estimates, not guarantees. Detection times vary with the amount taken, how often it's used, body weight, metabolism, hydration and the cut-off level of the test. This calculator can't predict the result of a specific test and isn't medical or legal advice. If you take prescribed or over-the-counter medication, tell whoever is carrying out the test.
Drug testing made easy | Get the answer in minutes | From £0.61 a test
UK Drug Testing supplies drug & alcohol testing kits direct to UK employers & individuals. No contracts, no callout fees, no waiting for a tester to turn up while alcohol levels change by the hour. Just accurate tests, fast delivery and UK support on the phone when you need it.
Shop Our Most Popular Collections
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Alcohol Test Kits
Alcohol testing kits for breath, saliva, urine, and breastfeeding An alcohol test...
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Saliva Drug Test Kits
Oral fluid saliva drug testing kits Oral fluid mouth swab drug test...
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Urine Drug Test Kits
Urine drug test kits for single drugs and multiple drugs A urine...
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Laboratory Drug Test Packs
Laboratory drug test Ensure accuracy and reliability with our laboratory confirmation drug...
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Surface Wipe Drug Test Kits
Wipes to detect drugs Drug test wipes can be used to screen...
Let customers speak for us
Arrived next day, discrete packaging. Did the test wrong though (didn’t read instructions and invalidated the result). Will order again now I’ve read the instructions.
They've been amazing spot on
Do exactly what thay say
Great company
It's worth waiting 3 days for a more accurate reading on lesser known drugs.
UKDT have been superb in ensuring we get the right product for our needs and they provide excellent "back office" support with guidance and advice, including access to training. Very reliable product and a great supplier
Great, fast delivery and Exactly like described.
Bought for myself after having my drink spiked. I've no problem using in full view in the pub.....might make them think twice. I've just bought some for my youngest daughter.
All arrived promptly and seems to work
Had issue with order and sorted out straight away. Prompt response and resolution
Quick delivery
Efficient and effective product
Excellent 👌 good value for money
I’m very happy with this product. The quality is excellent, it looks exactly as described, and it works perfectly. It arrived well packaged and on time, and I was impressed with the overall quality for the price. I would definitely recommend this product to others and would happily purchase it again.
Well priced, delivered super quickly and easy to use.
Wonderful and caring service! Big thank you to the team for their patience and attention to detail!