How long does monkey dust last?

Determining exactly how long PCP is detectable in the body depends on many variables, including which kind of drug test is being used. PCP, also known as angel dust, boat, hog, love boat, embalming fluid, killer weed, rocket fuel, supergrass, wack, ozone, can be detected for a shorter time with some tests but can be "visible" for up to three months in other tests.

The following is an estimated range of times, or detection windows, during which PCP can be detected by various testing methods:

  • Urine: Up to two weeks
  • Blood: Up to 24 hours
  • Saliva: Up to 48 hours
  • Hair: Up to 90 days

The timetable for detecting PCP in the system is also dependent upon each individual's metabolism, body mass, age, hydration level, physical activity, health conditions, and other factors, making it almost impossible to determine an exact time PCP will show up on a drug test.

Certain over-the-counter and prescription drugs may cause a false-positive result for phencyclidine (PCP) in some lab tests, including:

  • Dextromethorphan - Robitussin, Cough DM ER, etc.,
  • Ibuprofen - Advil, Motril
  • Imipramine - Tofranil, anti-depressant, nerve pain
  • Diphenhydramine - Benadryl, antihistamine
  • Doxylamine - Unisom, antihistamine, sleep-aid medications
  • Ketamine - anesthesia-like / may be used prior to colonoscopy
  • Lamotrigine - anti-seizure
  • Tramadol - pain medication
  • Desvenlafaxine - Pristiq, anti-depressant
  • Venlafaxine - Effexor, anti-depressant

There is a significant difference between a small amount of PCP compared to a large dosage, in terms of side effects. Therefore, knowing how long PCP remains in your system is important.

Even at low dosages, PCP can cause a loss of coordination and numbness throughout your body. On large dosages of PCP, users have been known to become paranoid and disorganized. Some report hearing voices, acting strangely, or become aggressive or violent. PCP can cause an increase in heart rate, respiratory rate, blood pressure, and body temperature.

Very large dosages of PCP taken orally can cause:

  • Kidney failure
  • Muscle rigidity
  • Heart arrhythmias
  • Seizures
  • Death

Because PCP has anesthesia and pain-killing properties, should serious injury occur during intoxication, the user may not readily grasp what has happened. Long-term use of PCP has been found to cause mental health and cognitive problems.

Some people who use PCP can become dependent upon the drug and develop classic symptoms of addiction such as not being able to get through the day without the drug and not being able to control how much of it that they use.

Phencyclidine users can also develop a tolerance to the drug, which means they require larger and larger dosages of it to achieve the same effect, which can have negative health consequences as they take increased amounts of the drug.

If you find yourself requiring larger amounts of PCP to reach the same "high" as you once experienced, you could be becoming dependent upon the drug and you may want to seek help in trying to quit.

Unlike alcohol and some other illicit drugs, there are no medications available to treat PCP dependence by reducing the effects of the drug or reducing craving for the drug for those trying to quit. Behavior therapy is currently the only effective treatment for PCP addiction. You may need to enter a residential treatment program so that cravings and any physical or psychiatric symptoms that emerge can be managed.

Published: 22nd August 2018

Monkey Dust is dominating the headlines. With its unpredictable side effects, the psychoactive substance is currently an epidemic in some parts of the UK. We took a closer look at the synthetic drug emergency services are describing as a potential public health crisis.

What is Monkey Dust?

Also known as Cannibal Dust, Zombie Dust and methylenedioxypyrovalerone (MDPV) Monkey Dust is a synthetic man-made drug, chemically similar to amphetamines, and from a family of drugs known as cathinones – an ingredient derived from the plant Khat.

Prior to 2010, cathinones could be purchased in ‘head shops’ but have since been reclassified as Class C Drugs in legislation rushed through parliament to tackle the rise of the drug mephedrone, before a wider crack down on so-called ‘legal highs’.

What are the Effects of Monkey Dust?

Synthetic forms like MDPV can be made with various changes in the chemical structure, so can cause unpredictable effects. The substance stops users from feeling pain, but also causes hallucinations and paranoia. Users have been known to climb trees and buildings like ‘monkeys’, which is how it was given its name – Monkey Dust.

Staffordshire Police and emergency services have reportedly responded to around 950 incidents related to Monkey Dust in the past three months, this equates to more than 10 a day.

Testing for Monkey Dust

As we explain in our blog ‘The Highs and Lows of Testing for Psychoactive Substances’, keeping up with new designer drugs can be a challenge.

At Lextox we’re able to detect over 38 psychoactive substances, including MDPV and the list is growing.

Similar to the other drugs we test for, we recommend hair testing for the following reasons:

  • We can test hair for specific substances. Targeted analysis means you can look for particular compounds.
  • It provides a unique window of detection covering months, rather than days that urine or oral fluid analysis can show. A month by month analysis is useful in profiling a pattern of drug use.
  • Results and Expert Reports for psychoactive substances can be issued in 6 working days or less of receiving the hair sample.
  • Results are legally defensible and are accepted in every UK family court.

To find out more about testing for ‘Monkey Dust’ or to book your sample collection appointment call 029 2048 4141 or email .

Synthetic drugs such as MDPV first appeared in Australia in the mid-2000s; mephedrone (otherwise known as "meow meow"), alpha-PVP ("flakka"), and methylone belong to the same family of synthetic cathinones as monkey dust and were marketed as designer substitutes for cocaine.

Australia witnessed a small increase in the proportion of people aged 14 or over who had tried one of these synthetic drugs at least once in their lifetime from 0.4% in 2013 to 1% in 2016. However, the proportion of Australians who tried it in 2016 alone had leveled out to 0.3%.

Monkey dust can be snorted, smoked, ingested orally, or injected and it is used in extremely small quantities, with users reporting 5mg or less per session. (MDMA is generally consumed in quantities of between 75mg and 125mg.)

Its users are at risk of intense, prolonged panic attacks, development of psychotic symptoms from sleep deprivation, addictive cravings, and death from overdose.

Professor Michael Cole, a forensic scientist from Anglia Ruskin University, noted in an article for the Conversation that drugs such as monkey dust increase in use where there are lulls in the supply or too much demand for the drugs they are trying to replicate.

Does Australia have an "epidemic" of monkey dust use?

It is highly unlikely that Australia is experiencing epidemic-level use of MDPV.

Dr Nicole Lee, an associate professor at the National Drug Research Institute, told BuzzFeed News that there "isn't much evidence that there's a huge epidemic or that lots and lots of people are using it".

Lee said that she has never seen a patient who has developed a dependence on monkey dust in her clinical work.

Lee notes that the most common medical problems with monkey dust are acute and experienced when drug users believe they are taking another substance such as ecstasy, as monkey dust is sometimes mixed into ecstasy pills.

This week's reports of monkey dust use appear to have stemmed from UK reports of the drug in late 2018. Staffordshire police began to report long-term addictions and violent behaviour from users.

One incident involved a Staffordshire man climbing a roof and throwing roof tiles at police allegedly while high on the drug.

Staffordshire police reported in August that they were receiving an average of 10 calls or more a day related to monkey dust.

However, Sarah Page, a senior lecturer in criminology from Staffordshire University, notes that it is unclear whether these calls were for the same individuals or if monkey dust was being mixed with other substances that exacerbated the situation.