Broad laboratory screening in Central London
13-Substance Urine Drug and Alcohol Test
This broad urine panel screens for alcohol and twelve drug groups.
Negative results usually arrive by email within two working days.
Book the 13-Substance Test Compare testing options
Panel
Thirteen substances
Negative results
Usually two working days
Location
76 Wimpole Street, London
Is This the Correct 13-Substance Test?
This option provides broader screening than the standard combined test.
| Requirement |
Recommended test |
Coverage |
| Broad drug and alcohol screening |
This 13-substance test |
Alcohol and twelve drug groups |
| Common combined screening |
Standard Combined Test |
Alcohol and six drug groups |
| Formal documented collection |
Chain-of-Custody Test |
Documented collection and handling |
| Several employees |
Employee Testing Service |
Authorised employer reporting |
Substances and Screening Cut-Offs
The test uses defined laboratory screening thresholds.
| Substance |
Cut-off |
Examples |
| Alcohol |
40 mg/dL |
Alcohol |
| Amphetamines |
300 ng/mL |
Amphetamine, methamphetamine, MDMA and ephedrine |
| Barbiturates |
200 ng/mL |
Barbiturates |
| Benzodiazepines |
200 ng/mL |
Diazepam, nitrazepam, lorazepam and alprazolam |
| Cannabinoids |
50 ng/mL |
Cannabis and marijuana |
| Cocaine |
150 ng/mL |
Cocaine |
| Opiates |
300 ng/mL |
Morphine, codeine and dihydrocodeine |
| Ketamine |
100 ng/mL |
Ketamine |
| LSD |
500 pg/mL |
LSD |
| Methadone |
100 ng/mL |
Methadone |
| Methaqualone |
300 ng/mL |
Methaqualone |
| Phencyclidine |
25 ng/mL |
PCP |
| Propoxyphene |
300 ng/mL |
Propoxyphene |
A result below a cut-off does not prove complete absence.
How the 13-Substance Test Works
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Order online. Choose one test for each person.
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Enter client details. Provide the full name and date of birth.
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Wait for confirmation. Do not attend before our email and text.
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Attend in Central London. Bring original photo identification.
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Receive results by email. Reports are reviewed before release.
Orders are processed Monday–Friday, from 9am–5pm. Pay online before attending.
Detection Window
Detection varies with substance, usage, metabolism and collection timing.
Alcohol
Commonly detectable for around 12–24 hours.
Drug groups
Often detectable for around 1–4 days.
Read the detailed detection-time guide
Results and Confirmation Testing
Results are reviewed and delivered securely by email.
Negative screen
Usually reported within two working days after collection.
Initial positive screen
Confirmation testing may add five working days.
Times may vary. Results cannot be issued by telephone.
Central London Testing Location
Address
The Doctors Laboratory
76 Wimpole Street
London W1G 9RT
Get directions
Walk-in times after confirmation
Monday–Friday: 7am–7pm
Saturday: 7am–1pm
Sunday: 8am–11am
Why Choose Drug Test London?
Broad panel
One sample screens thirteen substances.
Accredited laboratory
Samples are processed by UKAS-accredited The Doctors Laboratory.
Doctor-reviewed results
Reports are reviewed before secure release.
Confidential handling
Results reach the authorised recipient.
13-Substance Test Questions
What does this test screen for?
It screens alcohol and twelve specified drug groups.
Is this suitable for work or visa requirements?
It may be suitable. Confirm the requested panel and collection standard first.
Does this include chain-of-custody collection?
No. Choose the formal test when documented collection is required.
Do I need an appointment?
No. Order online and wait for attendance confirmation.
Can I attend on Sunday?
Yes. Sunday walk-in testing runs from 8am–11am after confirmation.
What follows an initial positive result?
The laboratory performs confirmation testing. Reporting may take five additional working days.
Book the 13-Substance Test
Order online, await confirmation, then attend in Central London.
Book Your Test
