How is methadone detected on a drug test?
Methadone is a synthetic opioid medication that is widely prescribed across the UK, most commonly as part of opioid substitution treatment for people recovering from heroin or other opiate dependence, and less frequently for severe chronic pain. While methadone is a safe and effective medicine when taken exactly as prescribed, it is also one of the drugs most frequently included in workplace, clinical, and home drug screening programmes.
If you're wondering whether methadone shows up on a drug test, the short answer is yes. However, because methadone is chemically different from natural opiates such as morphine and codeine, it is not always picked up by standard opiate drug tests. A dedicated methadone (MTD) test, or its first-line metabolite EEDP, or a multi-panel drug test that specifically lists methadone among the drugs it screens for, is usually required.
In this guide, we explain how methadone is detected, how long it stays in the body, what EDDP testing involves, and which type of drug test is best suited to different situations. If you'd like some background on the drug itself first, our companion article What is Methadone? And why is it a dangerous drug? covers what methadone is, how it works, and why its long half-life makes it particularly risky.
Important: If You Are Prescribed Methadone
Anyone taking prescribed methadone will test positive on a methadone drug test. This is expected and does not, by itself, indicate misuse.
If you are being tested at work, always declare a legitimate prescription to the relevant person in line with your employer's policy. Never stop, reduce, or adjust a prescribed methadone dose based on a rapid drug test result; any concerns about your treatment should always be discussed with your GP, prescriber, or drug treatment keyworker. Methadone can be dangerous in overdose, particularly when combined with alcohol, benzodiazepines, or other sedatives. If you or someone else shows signs of an opioid overdose, such as slow or stopped breathing, blue lips or fingertips, or unresponsiveness, call 999 immediately.
Does methadone show up on a drug test?
Yes. Methadone can be detected reliably by drug tests that are specifically designed to screen for it.
Unlike morphine, codeine, and heroin, which all break down via the same morphine metabolic pathway, methadone has a distinct chemical structure. For this reason, many basic opiate drug tests will not detect methadone unless the panel includes a dedicated methadone assay.
If you need to test for methadone, always choose a drug test that clearly lists Methadone (MTD) as one of the drugs detected, such as our Urine Multi Drug Panel or Saliva Multi Drug Panel, both of which screen for methadone alongside a wide range of other commonly misused substances.
Which drug tests detect methadone?
Several different types of drug test can detect methadone. The most appropriate option depends on why testing is being carried out, how quickly results are needed, and whether the result may need to be confirmed for legal or employment purposes.
Urine methadone tests
Urine drug testing is the most widely used method of detecting methadone, and generally offers the longest and most reliable detection window of any rapid, on-site test.
Urine drug tests are popular because they are:
- Quick and easy to use, with results in around five minutes
- Cost-effective, especially when screening for methadone alongside multiple other drugs
- Suitable for workplace, clinical, and home testing
- Able to detect methadone for several days after the last dose
Methadone can generally be detected in urine for approximately 3–5 days after a single dose, extending to up to 7 days or longer with sustained daily dosing, although this varies depending on dosage, metabolism, kidney function, body composition, and how long the medication has been taken.
Our Urine Multi Drug Panel screens for methadone at a 100ng cut-off alongside cannabis, cocaine, ecstasy, opiates, amphetamines, and benzodiazepines, while our Urine Multi Drug Panel (ALLTEST) uses a 300ng methadone cut-off and additionally screens for methamphetamine and buprenorphine. You can browse our full range in the Urine Drug Tests collection, and find general information on windows and cut-offs on our Urine Drug Detections page.
Saliva drug tests
Saliva (oral fluid) drug testing detects recent methadone use and reflects use over a much shorter window than urine.
Because samples are collected under direct observation, saliva testing helps reduce the risk of sample substitution or tampering, which makes it particularly useful in workplace environments. Saliva testing is commonly used for:
- Workplace and random employee testing
- Post-incident investigations
- Reasonable suspicion testing
- Fitness-for-duty assessments
Methadone is generally detectable in saliva for between 12 and 72 hours, although detection times vary between individuals. Our Saliva Multi Drug Panel screens for methadone at 75ng alongside cannabis, cocaine, synthetic cannabinoids, opiates, amphetamines, methamphetamine, benzodiazepines, buprenorphine, oxycodone, and alcohol, all from a single oral fluid sample. For workplace settings where observed, tamper-resistant collection is important, our Saliva Multi Drug Midstream (ALLTEST) is a popular 7-panel option covering methadone and alcohol together.
Blood testing
Blood testing for methadone is less common outside of hospital or forensic settings, and is not something we currently supply as a rapid, on-site kit. Because methadone remains in the bloodstream for a comparatively short period, blood testing is generally used by healthcare professionals to assess current impairment or very recent use, rather than to establish a longer history of use.
Hair drug testing
Hair testing provides by far the longest detection window of any method. As hair grows, traces of methadone become incorporated into the hair shaft, allowing a laboratory to identify use that occurred weeks or even months previously. Hair testing may detect methadone use for up to 90 days, depending on the length of hair analysed. Because it requires specialist laboratory analysis, hair testing is generally arranged through an accredited laboratory rather than performed as a rapid on-site test.
Methadone detection times
The length of time methadone remains detectable depends on several factors, including the dose taken, frequency of use, metabolism, age, liver and kidney function, and overall health.
| Sample type | Approximate detection window |
|---|---|
| Urine | 3–7 days |
| Saliva | 12–72 hours |
| Blood | 24–48 hours |
| Hair | Up to 90 days |
These detection windows are intended as a guide only and can vary considerably from person to person.
What is an MTD drug test?
An MTD drug test is a drug screening test designed specifically to detect methadone. MTD is the standard abbreviation used on drug test panels and result strips to indicate methadone.
Many multi-panel drug tests include MTD alongside other commonly misused substances such as:
- Cannabis (THC)
- Cocaine
- Opiates
- Amphetamines
- Benzodiazepines
- Methamphetamine
If you want to test for methadone specifically, always check the product description of any drug test to confirm that methadone (MTD) is included before purchasing, since not every panel does. Our Multi Drug Tests collection lists exactly which drugs, including methadone where applicable, each kit screens for.
What is EDDP testing?
EDDP (2-ethylidene-1,5-dimethyl-3,3-diphenylpyrrolidine) is the primary metabolite produced when the body breaks down methadone.
Some specialist laboratory tests detect EDDP rather than methadone itself. Testing for EDDP can provide additional reassurance, because a positive EDDP result confirms that methadone has actually been metabolised by the body, rather than simply being present in a sample through contamination or adulteration. EDDP testing is generally reserved for laboratory-based confirmation work rather than rapid on-site screening, and may be used in:
- Drug treatment programmes
- Clinical monitoring
- Forensic investigations
- Laboratory confirmation testing
Laboratory confirmation testing
Rapid drug tests, whether urine or saliva, are designed as screening tests. If a screening test produces a non-negative result, best practice is to send the sample to an accredited laboratory for confirmation.
Laboratories typically use highly sensitive analytical techniques such as:
- Gas Chromatography-Mass Spectrometry (GC-MS)
- Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
These methods accurately identify methadone and its EDDP metabolite, and significantly reduce the possibility of a false-positive result. Laboratory confirmation is particularly important when a drug test result may affect employment, legal proceedings, or clinical decision-making. Our Urine Lab Confirmation Pack provides a full "chain of custody" GC/MS confirmation service through a UKAS-accredited UK laboratory, and can be used to confirm a non-negative methadone result from an on-site screening test. You can browse the full range in our Lab Drug Tests collection.
Workplace methadone testing
Many organisations include methadone within their workplace drug testing policy, particularly in safety-critical industries such as:
- Transport and logistics
- Construction
- Manufacturing
- Rail
- Oil and gas
- Utilities
Testing may be carried out before employment, randomly, following an accident, for reasonable suspicion, or before an employee returns to work after rehabilitation. Employees who are legally prescribed methadone should inform the appropriate person within their organisation in accordance with company policy. A positive screening result should always be reviewed alongside legitimate prescription information and, where appropriate, confirmed by laboratory analysis before any employment decisions are made. Read more on our Workplace Drug Testing page, or browse our dedicated Workplace Drug Tests collection.
Home methadone drug tests
Home methadone drug tests allow individuals to screen for methadone use quickly and privately. These tests are commonly used by parents, carers, family members, and individuals monitoring their own recovery. Most home testing kits use a urine sample and provide results within minutes.
While home tests are highly reliable screening tools, any unexpected or disputed result should always be confirmed by an accredited laboratory rather than acted upon alone. Our Home Drug Testing page has more guidance on choosing and using a home test kit responsibly.
Choosing the right methadone drug test
When selecting a methadone drug test, consider:
- Whether methadone (MTD) is specifically listed on the panel
- The type of sample required (urine or saliva)
- Whether laboratory confirmation may be needed for a non-negative result
- The number of other drugs you wish to screen for at the same time
- Whether the test is intended for home, workplace, or clinical use
It's worth noting that all of the above relates to testing a person's urine or saliva sample. If you instead need to identify an unknown tablet, powder, or residue that is suspected to contain methadone, that calls for a different type of product entirely; our Residue/Powder Drug Test Panel can be used to test a suspect substance or surface directly, and is available with the rest of our range in the Residue Drug Tests collection.
Professional-quality rapid drug testing kits should provide clear instructions, rapid results, and reliable performance when used correctly.
Frequently asked questions
Some of the questions we're asked most often about methadone testing:
Does a standard 5-panel drug test detect methadone?
Not always. Many standard 5-panel drug tests do not include methadone. Always check that Methadone (MTD) is specifically listed before you buy.
Can saliva drug tests detect methadone?
Yes. Many oral fluid drug tests, including our Saliva Multi Drug Panel, are designed to detect methadone and are commonly used in workplace drug testing.
What does MTD mean on a drug test?
MTD is the abbreviation used on drug test panels and results to indicate that the test screens for methadone.
Can prescribed methadone cause a positive drug test?
Yes. Anyone taking prescribed methadone is expected to test positive on a methadone drug test. Prescription information should always be considered when interpreting a workplace drug testing result.
What is the difference between methadone and EDDP testing?
Methadone testing detects the drug itself, while EDDP testing detects methadone's main metabolite once it has been processed by the body. EDDP confirmation is generally carried out at laboratory level.
Does methadone affect a standard opiate (OPI) test result?
Not reliably. Because methadone has a different chemical structure to morphine-derived opiates, a standard OPI panel may not flag methadone use at all. A dedicated MTD test or a panel that lists methadone separately is needed.
Shop professional methadone drug tests
Whether you need methadone testing for the workplace, healthcare, occupational health, or home use, choosing a professional-quality testing kit is essential for reliable results. Our range includes rapid urine and saliva multi-panel tests that screen for methadone, along with laboratory confirmation and workplace testing solutions, backed by UK technical support and fast delivery.
The information provided in this article is for general educational purposes only and is not intended to replace professional medical advice, legal advice, or guidance from a drug treatment service.
Methadone detection times can vary depending on factors including dose, frequency of use, metabolism, body composition, hydration, and individual health. Any estimates provided in this article should not be used to predict a specific individual's test result, and non-negative screening results should always be confirmed by an accredited laboratory before any employment, legal, or clinical decision is made. Guidance on prescribing and treatment approaches for methadone in the UK is set out by the Department of Health and Social Care. (GOV.UK)
Drug Testing Kit provides information and testing products to support awareness and responsible decision-making. Our drug testing products are not a substitute for professional medical advice, legal advice, or clinical drug treatment services.
If you have concerns about your own or someone else's methadone or opioid use, speak to a GP, pharmacist, or your local drug treatment service. Confidential advice and support is also available from FRANK on 0300 123 6600 or at talktofrank.com. In a medical emergency, always call 999.
