The Dangerous Drug Slipping Through Standard Workplace Drug Tests: 2026 Update

Author : Dr Mike Garside

Why standard workplace drug tests may not detect this emerging drug trend

This article is for general educational purposes only and does not constitute legal or medical advice. Figures are correct at the time of writing (September 2026); please refer to the published date stamp for updates. If you have concerns about drug use, please speak to a healthcare professional.

Ketamine use in the UK has moved well beyond nightclubs and festivals. When we first wrote about this in 2025, the warning signs were already there. A year on, the official data paints a clearer and more worrying picture: wastewater analysis shows ketamine consumption in England has more than tripled since 2021, Border Force has recorded its biggest quarterly ketamine seizure in 15 years, and the number of adults starting treatment for ketamine problems is now more than 12 times what it was a decade ago.

Yet ketamine is still missing from most standard 5 and 6 panel workplace drug tests. This updated guide looks at what has changed in 2026, why ketamine matters to employers, the health risks involved, and how to choose a drug test that actually screens for it. It matters because regular ketamine use can cause severe and sometimes irreversible damage to the bladder, kidneys and liver, often before the person realises anything is wrong.

What's changed since our 2025 update?

Several major data releases have landed since our original article, including the latest Crime Survey for England and Wales, new Home Office wastewater estimates and a full harms review from the government's drug advisers. Here are the headline figures:

Indicator	Latest figure	What it tells us
Adults aged 16–59 using ketamine in the last year	264,000 (0.8%), year ending March 2025	Slightly below the 2022/23 peak of 299,000, but well above the 160,000 recorded a decade earlier
Young adults aged 16–24	120,000 (2.0%)	More common in this age group than MDMA, nitrous oxide or magic mushrooms; only powder cocaine is higher
Ketamine consumed in England (wastewater)	30,800kg between August 2024 and July 2025	An illicit market worth an estimated £0.9 billion, with consumption up 229% since 2021
Adults starting treatment for ketamine (England)	5,365 in 2024/25	More than 12 times the 426 recorded in 2014/15
Under-18s in treatment reporting ketamine problems	1,465 in 2024/25	For the first time, more children reported problems with ketamine than with ecstasy
Border Force ketamine seizures	1,298kg in January–March 2026	The highest quarterly total in 15 years, beating the previous record set in 2025
Deaths with ketamine on the death certificate (England & Wales)	60 in 2024	Up from 14 in 2017, although other drugs are usually involved too

Why the survey dip doesn't mean the problem is shrinking: self-reported surveys rely on people admitting to illegal drug use. Wastewater, treatment, hospital and seizure data don't, and every one of those measures is still heading upwards. A separate NHS survey using face-to-face interviews found 4.3% of 16–24 year olds had used ketamine in the past year, noticeably higher than the Crime Survey estimate for the same period.

Ketamine is now a weekday drug

One of the most important findings for employers comes from the Home Office's latest wastewater report. Cocaine and MDMA show the classic "party drug" pattern, spiking at weekends and dropping off during the week. Ketamine doesn't. It is consumed consistently from Monday to Sunday, which researchers say points to more regular and potentially problematic use.

In practical terms, that means ketamine isn't just something that might linger from a Saturday night out. For a growing number of people, it is part of everyday life, including working days. The highest levels of ketamine consumption were recorded in Liverpool, Brighton, Portsmouth, Norfolk and Bristol, so employers in and around these areas have particular reason to review their workplace drug testing. Across Europe, wastewater monitoring published in 2026 shows a similar rise in ketamine alongside cocaine.

Who is using ketamine, and why?

Ketamine use peaks among people in their early twenties, with many first trying it as teenagers. Treatment services in Greater Manchester report that almost two-thirds of the people they see for ketamine are under 18. In other words, the young people now entering apprenticeships, graduate schemes and entry-level roles are the generation most exposed to this drug.

The reasons people give for using ketamine help explain why it has spread so quickly:

• It's cheap: often cheaper than cocaine or even alcohol.
• It's easy to get: sold through messaging apps, frequently with home delivery.
• It has a "clean" reputation: users describe quick recovery with no hangover, and a perception that it is a pharmaceutical-grade product.
• Self-medication: a growing number of people use it to manage anxiety, depression or pain, which can quickly become a cycle of escalating use.

For employers recruiting a younger workforce, a pre-employment drug test that includes ketamine is one of the simplest ways to reflect these changing patterns. Our ultra sensitive recruitment 5 panel test screens for ketamine at a low 100ng/mL cut-off, alongside cannabis, cocaine, amphetamine and opiates:

If you want broader coverage of the party drugs most popular with under-30s, including LSD and ecstasy, the GEN-Z 7 panel urine test is designed specifically for a younger workforce:

The hidden threat: ketamine inside other drugs

Many people who test positive for ketamine may not have knowingly taken it. Drug-checking work in Greater Manchester found street ketamine ranging from just 2.4% to almost 100% purity, with some samples containing cocaine, MDMA or other substances. The reverse happens too, with ketamine used to bulk out more expensive drugs.

The clearest example is "pink cocaine", also known as tusi. Despite the name, drug-checking services around the world have found it is usually a dyed mixture of ketamine and MDMA, often with little or no cocaine at all. Someone who believes they took a line of cocaine at the weekend could therefore produce a ketamine result, and an employer testing only for cocaine could miss the drug that was actually used.

Where employers find unidentified powders or residues on site, for example in washrooms, vehicles or lockers, a surface wipe drug test can help establish what is present. Our ketamine-specific powder and surface test gives an on-site result in 5–10 minutes:

Will ketamine become a Class A drug?

In January 2025 the Home Office asked the Advisory Council on the Misuse of Drugs (ACMD) to review whether ketamine should be moved from Class B to Class A. The ACMD published its findings in January 2026 and recommended that ketamine should remain Class B. This was a majority view rather than a unanimous one: law enforcement bodies generally backed reclassification, while most health and social care professionals opposed it, arguing that it would be unlikely to reduce use on its own and could discourage people from seeking help.

As of late summer 2026, ministers have said they are still carefully considering the evidence, so ketamine remains a Class B drug. Possession carries a maximum of five years in prison and an unlimited fine, while supply or production carries up to 14 years.

The ACMD also made a number of wider recommendations, several of which relate directly to testing. Police roadside drug screening does not currently test for ketamine, and neither does drug testing on arrest. The ACMD has recommended expanding both to include it.

What this means for employers: whatever the final classification decision, it won't change your health and safety duties. If the police and the criminal justice system are only now looking at routine ketamine testing, it is a fair assumption that many workplace testing programmes haven't caught up either.

Does a standard workplace drug test detect ketamine?

In most cases, no. Ketamine is only detected by a test that includes a dedicated KET screen, and it is not part of most basic 5 panel drug tests, which typically cover cannabis, cocaine, opiates, amphetamines and benzodiazepines or methamphetamine. If ketamine isn't on the panel, a ketamine user will pass.

The cut-off level matters too. The lower the cut-off, the smaller the amount of ketamine the test can pick up, and the longer after use it can detect. Here's how some of our most popular ketamine-inclusive tests compare:

Test	Sample	Ketamine cut-off	Typical ketamine detection window
Ultra Sensitive Recruitment 5 Panel	Urine	100ng/mL	Up to 3–5 days
GEN-Z Party 7 Panel	Urine	500ng/mL	1–3 days
10 Panel Workplace Split Key Cup	Urine	1000ng/mL	1–3 days
13 Panel Ultra Sensitive Cup	Urine	1000ng/mL	1–3 days
Ketamine Saliva Test 50ng	Saliva	50ng/mL	24–48 hours
Ketamine Urine Test Strips	Urine	1000ng/mL	1–3 days

Detection times are a guide only and vary with the amount used, how often someone uses and their individual metabolism. Our drug test detection times guide has more detail.

For routine workplace screening, our best-selling 10 panel split key cup adds both ketamine and tramadol to the core drug groups, with a built-in temperature strip, adulteration check and a sealed second chamber that retains the sample for laboratory confirmation:

For the widest coverage from a single sample, the 13 panel ultra sensitive cup screens for ketamine alongside barbiturates, buprenorphine, PCP and tricyclic antidepressants, with a highly sensitive 20ng/mL cannabis screen:

Saliva testing is the better choice when you need to know about recent use, for example after an incident or where someone appears unfit for work. Because the sample is collected under direct observation, it is also much harder to tamper with. Our single-drug ketamine saliva test gives a result in 5–10 minutes:

Already happy with your current panel? You don't necessarily need to switch. Single ketamine urine test strips can be run alongside an existing test to add a ketamine screen at low cost:

You can also browse our full range of ketamine drug tests, including urine, saliva and surface options, or our workplace saliva drug tests for oral fluid options.

Risks of ketamine use in the workplace

Ketamine is a dissociative anaesthetic. Even a single dose can affect how aware someone is of their surroundings, and regular heavy use brings longer-term problems that can follow a person into work:

• Impaired awareness and co-ordination: ketamine affects balance, reaction times, judgement and the ability to feel pain, increasing the risk of falls and accidents around machinery, at height or on busy sites.
• Driving for work: an analysis of fatal UK road collisions between 2014 and 2018 found ketamine above the legal driving limit in 29 cases, around 1% of those with drug data available.
• Cognitive effects: frequent, high-dose use is linked to problems with memory, attention and decision-making, although these appear to be at least partly reversible if use stops.
• Absence and presenteeism: bladder pain, urinary urgency and severe abdominal cramps can lead to sickness absence, frequent breaks and reduced productivity.
• Mixing with other substances: ketamine is frequently taken with alcohol, cocaine or other drugs, which amplifies impairment and unpredictability.
• Legal and reputational risk: employers have a duty under the Health and Safety at Work etc. Act 1974 to protect employees and others affected by their work. An incident involving an impaired worker can lead to enforcement action, claims and reputational damage.

Hospital data reflects this growing burden. In emergency departments taking part in a major UK study of suspected drug toxicity, ketamine was detected in 7% of cases in 2015, rising to 21% by 2023.

Health risks of ketamine misuse

The long-term health consequences of regular ketamine use are now far better understood, and many people don't recognise the damage until it is already serious:

• Ketamine bladder damage (uropathy): symptoms include needing to urinate frequently and urgently, pain, burning, blood in the urine and incontinence. Around a quarter of regular users report at least one urinary symptom, and urologists are seeing rising referrals from both adults and teenagers. In severe cases surgery may be needed.
• Abdominal pain ("K-cramps"): affects more than a quarter of regular users, sometimes with vomiting.
• Liver and bile duct damage: seen in around 1 in 10 regular users and, with prolonged use, can progress to permanent scarring of the liver.
• Tolerance and dependence: an estimated 5–8% of users progress to frequent, high-dose use, with withdrawal symptoms when they try to stop.
• Mental health: ketamine can worsen anxiety and depression, and some people end up using more of it to manage the very symptoms it is causing, including the pain from bladder damage.

Stigma remains a major barrier. People with ketamine-related incontinence or bladder damage often delay seeking help because of embarrassment, which is why early, non-judgemental identification matters so much.

A practical 2026 checklist for employers

1. Check your current panel: look for "KET" on your test kit. If it isn't there, your programme isn't screening for ketamine.
2. Match the test to your risk: prioritise ketamine screening if you employ a younger workforce, operate in safety-critical sectors such as construction, logistics, manufacturing or transport, or are based in one of the higher-use areas.
3. Choose the right sample: urine for a longer detection window in random and pre-employment testing; saliva for recent use in post-incident and for-cause testing.
4. Name ketamine in your policy: make sure your drug and alcohol policy clearly lists the substances you test for, so there are no surprises for staff.
5. Confirm every non-negative result: point-of-care tests are screening tests. Before taking any action, send the sample for UKAS-accredited laboratory confirmation.
6. Train the people who test: correct collection and chain of custody protect both you and your employees. See our drug test training options.

Our laboratory confirmation pack uses LC-MS/MS analysis at a UKAS-accredited UK laboratory with full chain of custody, and can confirm ketamine along with a wide range of other drug groups:

Supporting early intervention

At UK Drug Testing, we believe testing works best as part of a supportive approach rather than a purely disciplinary one. Because ketamine harms build up gradually and are often hidden, a positive result can be the first opportunity for someone to get help before lasting damage is done.

Consider pairing your testing programme with clear routes to occupational health, an employee assistance programme or local drug services. Honest, confidential information about ketamine is also available from FRANK.

The takeaway for employers: ketamine is now one of the most widely used drugs among young adults in the UK, it is increasingly used on weekdays, and it is still missing from many standard workplace drug tests. If your panel doesn't include ketamine, 2026 is the year to change that. Choosing a ketamine-inclusive drug test is a small change that closes a significant gap.