CBD itself will not make you fail a standard drug test. Urine and saliva tests look for THC and its breakdown products, not for CBD. The risk comes from trace THC in full-spectrum products: in controlled studies, people who swallowed oil with under 1 mg of THC a day tested positive. If you are tested, choose a THC-free product. Our oils are cosmetics for use on the skin; in a small study, repeated skin use of THC salves left no THC in blood or urine (Hess 2017).
Key facts
- What tests look for
- THC (saliva, blood) or its breakdown product THC-COOH (urine). CBD is not part of standard tests.
- Our full-spectrum oils
- Natural THC traces under 0.2% on every published report; not the right choice if you are tested.
- Our THC-free oils
- No detectable Δ9-THC on the reports shown below.
- Roadside rules
- Zero tolerance in 14 of 29 countries (EU, UK, Norway), including France, Spain and Sweden. Germany: 3.5 ng/ml in blood serum. UK: 2 µg per litre of blood.
- Sport
- WADA allows CBD, but THC and all other cannabinoids are prohibited in competition.
Will CBD show up on a drug test?
No, not on a standard test. Workplace and roadside tests detect THC, the cannabinoid that causes a high. In a controlled study, 100 mg of pure CBD, swallowed or vaporised, never produced a confirmed positive urine test at standard cut-offs (Spindle et al., 2020).
The problem is the THC that comes with the CBD. Full-spectrum extracts keep a little of the plant's natural THC, and a 2026 study of low-dose hemp oils found that conventional drug testing "cannot reliably distinguish" it from THC in cannabis (Wolinsky et al., 2026).
How do urine and saliva drug tests work?
Most tests have two steps. A quick screening test (a cup, strip or roadside swab) gives a yes or no above a set cut-off. A positive screen is then confirmed by a laboratory with a more precise method, at a lower threshold. Cut-offs are given in ng/ml: nanograms (billionths of a gram) per millilitre.
| Test | What it looks for | Cut-off (screening / lab) |
|---|---|---|
| Urine (work) | THC-COOH, an inactive breakdown product of THC | 50 / 15 ng/ml |
| Saliva (work) | THC | 10 / 2 ng/ml (EWDTS) |
| Blood | THC and its breakdown products | Set by national law |
| Hair | THC, THC-COOH | Lab only |
| Urine (sport, WADA) | Carboxy-THC (the same as THC-COOH) | Threshold 150 ng/ml; decision limit 180 ng/ml (adjusted for urine concentration) |
In a 2023 evaluation, six common urine screening kits also reacted to Δ8-THC and its breakdown products. They did not react to CBD itself, although some kits reacted to two CBD breakdown products in spiked laboratory samples, not in people (Wolf et al., 2023). This matters because hemp extracts naturally contain a little Δ8-THC too.
How much THC is in full-spectrum CBD oil?
Every batch of our oils has a lab report, and its THC value is printed on the label to two decimals. These are the example reports on our test results page:
| Oil (report no.) | Δ9-THC / Δ8-THC | CBD |
|---|---|---|
| CBD 3% MCT Natural, full spectrum (220927.17) | 0.14% / 0.04% | 3.34% |
| CBD 5% Olive, full spectrum (230116.04) | 0.15% / 0.04% | 5.32% |
| CBD 10% Hemp seed, full spectrum (221101.10) | 0.14% / 0.04% | 10.66% |
| CBD 15% MCT Natural, full spectrum (221205.20) | 0.15% / 0.05% | 15.52% |
| CBD 20% MCT Natural, full spectrum (230113.04) | 0.15% / 0.04% | 20.59% |
| CBD 25% Olive, full spectrum (221124.18) | 0.17% / 0.05% | 25.48% |
| CBD 30% Hemp seed, full spectrum (230220.06) | 0.17% / 0.07% | 30.04% |
| Zermatt Balance 30 ml, full spectrum (260410_A01 / sample 260408.03) | 0.14% / 0.06% | 15.83% |
| St. Moritz Restore 30 ml, full spectrum (260410_A01 / sample 260408.04) | 0.14% / 0.06% | 25.13% |
| CBD 5% Olive, broad spectrum (220922.10) | 0.00% / 0.00% | 5.23% |
| CBD 10% MCT Natural, broad spectrum (221117.21) | 0.00% / 0.00% | 10.77% |
| CBD 30% Hemp seed, broad spectrum (230110.11) | 0.00% / 0.00% | 31.04% |
| Lugano Clarity 30 ml, THC-free (260410_A01 / sample 260408.02) | n.d. / n.d. | 10.47% |
| Lucerne Calm 30 ml, THC-free (260410_A01 / sample 260408.01) | n.d. / n.d. | 20.50% |
If you are tested
Full-spectrum oils keep natural traces of THC (under 0.2% on every published report), so if you are drug-tested, choose a THC-free oil. Our THC-free oils show no detectable THC on their batch reports. Our oils are cosmetics for use on the skin; follow your label.
Can full-spectrum CBD oil cause a positive urine test?
Yes, especially if it is swallowed regularly. Three controlled studies show how little THC it takes:
- Under 1 mg of THC a day for four weeks: 14 adults took a full-spectrum oil by mouth three times a day, and 7 of them tested positive for THC-COOH (Dahlgren et al., 2021).
- 0.5 mg of THC twice a day for two weeks: in a 60-person trial, every group that received any THC had at least one confirmed positive urine test. Two samples were still positive a week after the last dose. The THC groups showed no measurable difference in effects or impairment compared with CBD alone (Wolinsky et al., 2026).
- One inhaled dose of 3.7 mg of THC with 100 mg of CBD produced confirmed positive urine samples, while 100 mg of pure CBD did not (Spindle et al., 2020).
The key point is build-up: with daily use, THC-COOH can cross the cut-off after a week or two.
What about use on the skin, as our label directs? A small German study found no THC or its breakdown products in blood or urine after three volunteers applied THC salves every 2–4 hours for three days (Hess et al., 2017). The salves contained less THC than a full-spectrum oil, so if you are tested, a THC-free oil remains the safest choice.
Can CBD oil make a roadside saliva test positive?
Roadside tests use a mouth swab that detects THC. A 2026 study gave volunteers oil with 100 mg of CBD and small amounts of THC. After one dose with 0.5 mg of THC, 1 in 10 had a positive saliva test (2 ng/ml or more) 1.5–6 hours later. With 2.8–3.7 mg of THC, 8 in 10 were positive (Vikingsson et al., 2026). The authors noted that oil left in the mouth shows up strongly in saliva.
The risk is highest in the first hours, and falls away with a THC-free product.
Can I drive after using CBD oil? The rules by country
Two questions matter: are you fit to drive, and is there THC in your body? CBD does not cause a high, but it can make some people drowsy (see CBD side effects). Never drive if you feel tired. The law often only asks whether THC is present.
Zero tolerance is the most common rule. Across the 27 EU countries, the UK and Norway, 14 treat any THC as an offence, 7 set a numeric limit, and 8 have no fixed limit but punish driving under the influence. Iceland and Switzerland are included for travellers. Laws change, so check before you travel.
Zero tolerance
| Country | THC rule for drivers | Legal source |
|---|---|---|
| Belgium | Any THC found by a saliva or blood test (from 1 ng/ml in blood plasma) is a criminal offence. A prescription is no defence. | Road Traffic Act 1968, art. 37bis |
| Bulgaria | Driving after any cannabis use, confirmed by testing, is a crime with 1–3 years in prison. There is no medical exemption. | Criminal Code, art. 343b(3) |
| Cyprus | Any drug found in a lab-tested saliva sample, whatever the amount, is a crime. The law has no prescription exemption. | Road Safety Law 174/1986, arts. 11B–11Z |
| Denmark | Offence above 0.001 mg of THC per kg of blood, unless prescribed and taken as prescribed. Penalties rise with the level. | Færdselsloven § 54 |
| Finland | Any THC or THC metabolite in the blood is a criminal offence. Medicines you are allowed to use are exempt, unless you are impaired. | Rikoslaki 23:3 |
| France | Any amount is a criminal offence. Saliva screening triggers at 15 ng/ml; lab confirmation at 1 ng/ml (saliva) or 0.5 ng/ml (blood). | Code de la route L235-1; Arrêté of 13 Dec 2016 |
| Hungary | Driving under the influence of drugs is a crime (up to 2 years in prison). The law sets no threshold, and in practice any active drug in the blood counts. | Criminal Code (Btk.) § 237 |
| Luxembourg | 1 ng/ml of THC or more in the blood is a criminal offence, even though home growing is legal. There is no prescription exemption. | Code de la route, art. 12 § 4 |
| Poland | Any detectable THC is at least a petty offence with a mandatory driving ban. Driving under the influence is a crime. | Petty Offences Code, art. 87; Criminal Code, art. 178a |
| Portugal | Any THC confirmed in a blood test counts as driving under the influence, with a fine and a driving ban. Driving when unfit is a crime. | Código da Estrada, art. 81; Supreme Court ruling 10/2024 |
| Slovakia | You may not drive while any drug may still be in your body; this is an administrative offence. Driving when unfit is a crime. | Act 8/2009, § 4(2) |
| Slovenia | Any THC in blood or saliva brings a fine of at least €1,200 and 18 penalty points. Medicines taken as prescribed are exempt after a medical check. | ZPrCP, art. 106 |
| Spain | Any drug in a saliva test means a €1,000 fine and 6 points; impaired driving is a crime. Prescribed medicines are exempt if you are fit to drive. | Traffic Act, art. 14; Penal Code, art. 379 |
| Sweden | Any narcotic in the blood is drug-driving, unless prescribed. | Trafikbrottslagen § 4 |
| Iceland (non-EU) | Any THC in the blood counts as driving under the influence. It is a criminal offence, with loss of licence for 6 months to 2 years. | Umferðarlög 77/2019, art. 50 |
| Switzerland (non-EU) | 1.5 µg of THC or more per litre of blood legally counts as unfit to drive, a criminal offence. With a prescription, you are punished only if actually impaired. | VRV Art. 2; VSKV-ASTRA Art. 34 |
Numeric limit
| Country | THC rule for drivers | Legal source |
|---|---|---|
| Czechia | Administrative offence at 2 ng/ml of THC or more in blood serum. It becomes a crime if you are unfit to drive. | Government Decree 41/2014; Act 361/2000, § 5 |
| Germany | Administrative offence at 3.5 ng/ml of THC or more in blood serum. Total ban for drivers under 21 and on probation. | § 24a StVG; § 24c StVG |
| Ireland | Criminal offence at 1 ng/ml of THC in blood. A doctor's medical exemption certificate lifts the limit, but not the ban on impaired driving. | Road Traffic Act 2010, s. 4 |
| Malta | Crime above 2 µg of THC per litre of blood (zero for bus, taxi and commercial drivers), with a fine of at least €4,000. A prescription is no defence. | Traffic Regulation Ordinance, Cap. 65 |
| Netherlands | Criminal offence above 3 µg of THC per litre of blood, or 1 µg if combined with alcohol or other drugs. Medical cannabis users are not exempt. | Besluit alcohol, drugs en geneesmiddelen, art. 3; WVW 1994, art. 8 |
| Norway | Above 0.004 µmol/l of THC in blood (about 1.3 µg per litre) counts as impaired, a criminal offence; penalties rise with the level. Prescribed medicines are judged on actual impairment. | Vegtrafikkloven § 22; Regulation 2012-01-20-85 |
| UK (England, Wales, Scotland) | Offence above 2 µg of Δ9-THC per litre of blood; roadside kits are used. Northern Ireland has no set limit, but driving while unfit is an offence. | SI 2014/2868; SSI 2019/83 |
No fixed limit
| Country | THC rule for drivers | Legal source |
|---|---|---|
| Austria | Driving while impaired by drugs, confirmed by a doctor and a blood test, is an administrative offence (€800–3,700). There is no fixed THC limit. | StVO 1960 § 5; § 99 |
| Croatia | Driving under the influence of drugs is an offence: a fine of €1,320–2,650 or up to 60 days in jail. The law sets no THC limit. | Road Safety Act, art. 199 (as amended, NN 92/2014) |
| Estonia | Driving while intoxicated by drugs is a crime (fine or up to 3 years in prison). A positive test alone is not enough; a doctor assesses the signs. | Traffic Act § 69; Penal Code § 424 |
| Greece | Driving under the influence of drugs is a crime: at least 2 months in prison and a 3–6 month licence ban. The law sets no THC limit. | Road Traffic Code (law 5209/2025), art. 46 |
| Italy | Driving after taking drugs is a crime, even without visible impairment. Since a 2026 court ruling, the level found must be able to impair an average driver; no number is set. | Codice della strada, art. 187; Constitutional Court, ruling 10/2026 |
| Latvia | Driving a car under the influence of drugs is a crime, with a 5-year licence ban. A doctor must find you were affected, not only that you had used cannabis. | Criminal Law, s. 262; Cabinet Regulation 719 |
| Lithuania | Driving under the influence of drugs means a €800–1,100 fine and losing your licence for 1–1.5 years. A doctor assesses whether you were intoxicated. | Administrative Offences Code, art. 422 |
| Romania | Driving under the influence of drugs is a crime (1–5 years in prison). Since 2025, courts need THC in your blood plus proof it could affect your driving. | Criminal Code, art. 336 |
France: "legal CBD" is no defence
France is the strictest in practice. In June 2023 the Cour de cassation ruled that the legal sale of cannabis products with up to 0.30% THC "has no bearing" on the offence, which exists "regardless of the dose" (Cass. crim., 21 June 2023, no. 22-85.530). The thresholds in the 2016 order are measurement limits, not a permitted amount. Since 20 August 2026, driving after narcotic use carries up to three years in prison, a €9,000 fine and the loss of half the licence points; combined with alcohol, up to five years and €15,000 (Article L235-1, as amended by Law no. 2026-798).
Germany, the UK, Denmark and Sweden
Germany has had a legal limit of 3.5 ng/ml of THC in blood serum since 22 August 2024 (Federal Ministry of Transport), with fines of up to €3,000 (§ 24a StVG). Drivers who have used cannabis must not drink any alcohol before or while driving.
In the UK, a conviction can mean at least a one-year driving ban, an unlimited fine, up to six months in prison and a criminal record (GOV.UK).
In Denmark and Sweden the rule applies whether or not you were impaired. Only prescribed medicines are exempt, and a CBD cosmetic is not a prescription.
How long does THC from CBD oil stay in your system?
It depends on the test and on how regularly THC was taken:
- Saliva: about a day in occasional users, three days or more in frequent users (Antunes et al., 2023).
- Urine: days, and longer with daily use. In the 2026 hemp-oil trial, two urine samples were still positive a week after the last dose (Wolinsky et al., 2026).
- Hair: months, as far back as the hair's length allows (Antunes et al., 2023).
CBD itself also stays in the body for days, but standard tests don't look for it.
I'm tested at work or in sport. What should I choose?
At work
Choose a broad-spectrum or THC-free oil and keep the lab report for your batch (the batch number is on the label). Tell the tester or company doctor beforehand what you use. A report won't overturn a positive result, but it helps explain it.
In sport (WADA)
WADA removed CBD from the Prohibited List, but the rule is narrower than many athletes think. The 2026 list prohibits "all natural and synthetic cannabinoids" in competition, with cannabidiol as the only exception (WADA Prohibited List 2026, S8). The THC threshold for a positive urine result is in the table above.
So CBG, CBN and CBC are also prohibited in competition, and hemp extracts, including our broad-spectrum oils, contain small amounts of them. Our Lugano Clarity and Lucerne Calm oils are THC-free but contain added CBG (7% and 3%). Athletes are responsible for everything in their body, so check with your national anti-doping agency before using any cannabinoid product.
Practical advice
- Use the product as directed. Our oils are cosmetics for use on the skin. Keep them away from the mouth and lips, especially before driving.
- Allow time if you switch. After regular use of a full-spectrum product, THC-COOH can stay in urine for at least a week.
- Never drive if you feel drowsy, whatever a test would show.
No product can guarantee a negative test
Cut-offs, lab methods and individual metabolism vary, so no CBD product can guarantee a negative result. A THC-free oil used on the skin as directed keeps the risk as low as possible.
Frequently asked questions
Will CBD show up on a drug test?
CBD itself does not. Standard urine and saliva tests look for THC or its metabolite THC-COOH. A positive result after using CBD comes from THC in the product.
Does THC-free (broad-spectrum) CBD show up on a drug test?
Very unlikely: standard tests look for THC, and our THC-free oils show no detectable THC on their batch reports. No product can guarantee a negative result.
Can full-spectrum CBD oil make me fail a urine test?
Yes. In clinical studies, people who swallowed hemp oil with 0.5 mg of THC twice a day, or under 1 mg a day for four weeks, tested positive at standard cut-offs. THC-COOH builds up with daily use.
Can I fail a roadside saliva test after using CBD oil?
With full-spectrum oil, yes, especially within a few hours of the oil reaching your mouth. In a 2026 study, one dose containing 0.5 mg THC made 1 in 10 saliva tests positive. THC-free oils avoid this risk.
Is it legal to drive after using CBD in France?
Only if there is no THC in your body. France punishes driving after narcotic use regardless of the dose, and the Cour de cassation ruled in 2023 that legally sold CBD is no defence. Since August 2026, the maximum penalty is three years and €9,000.
Which European countries have zero tolerance for THC when driving?
Belgium, Bulgaria, Cyprus, Denmark, Finland, France, Hungary, Luxembourg, Poland, Portugal, Slovakia, Slovenia, Spain and Sweden treat any THC, or any amount above a very low test cut-off, as an offence. So do Iceland and Switzerland. Czechia, Germany, Ireland, Malta, the Netherlands, Norway and the UK set a numeric limit instead.
How long does THC from CBD oil stay in urine?
Usually days, and longer with daily use. In a 2026 trial of low-THC hemp oil, two urine samples were still positive a week after the last dose.
Can a hair test detect CBD oil use?
Hair tests look for THC and THC-COOH, not CBD, and can reflect months of use. Regular use of a THC-containing product could in principle be detected. A THC-free product greatly reduces this risk.
Is CBD allowed for athletes?
WADA permits cannabidiol, but THC and all other cannabinoids, such as CBG and CBN, are prohibited in competition. Most hemp extracts contain some of these, so check with your anti-doping agency first.
Does CBD oil on the skin cause a positive test?
A small study found no THC in blood or urine after repeated skin use of THC-containing salves. The salves had less THC than full-spectrum oil, so a THC-free product is still the safer choice if you are tested.
Our CBD oils are cosmetic products for use on the skin. They are not medicines and are not intended to diagnose, treat, cure or prevent any disease. This article is general information, not legal advice. Traffic and workplace rules change, so check the current law in the country where you drive. Talk to your doctor before use if you take medication or are pregnant or breastfeeding.
Last reviewed:
Sources
- Antunes M, Barroso M, Gallardo E. Analysis of cannabinoids in biological specimens: an update. Int J Environ Res Public Health 2023;20(3):2312. doi:10.3390/ijerph20032312
- Spindle TR, Cone EJ, Kuntz D, et al. Urinary pharmacokinetic profile of cannabinoids following administration of vaporized and oral cannabidiol and vaporized CBD-dominant cannabis. J Anal Toxicol 2020. doi:10.1093/jat/bkz080
- Dahlgren MK, Sagar KA, Lambros AM, Smith RT, Gruber SA. Urinary tetrahydrocannabinol after 4 weeks of a full-spectrum, high-cannabidiol treatment in an open-label clinical trial. JAMA Psychiatry 2021. doi:10.1001/jamapsychiatry.2020.3567
- Wolinsky D, Zamarripa CA, Spindle TR, et al. The acute and chronic pharmacokinetics and pharmacodynamics of oral cannabidiol with and without low doses of delta-9-tetrahydrocannabinol. J Anal Toxicol 2026. doi:10.1093/jat/bkaf075
- Vikingsson S, Zamarripa CA, Spindle TR, et al. The acute and chronic pharmacokinetic oral fluid profile of oral cannabidiol with and without low doses of Δ9-THC. J Anal Toxicol 2026. doi:10.1093/jat/bkaf102
- Wolf CE, Pokhai AA, Poklis JL, Williams GR. The cross-reactivity of cannabinoid analogs in urine of six commercially available homogeneous immunoassays. J Anal Toxicol 2023. doi:10.1093/jat/bkad059
- Hess C, Krämer M, Madea B. Topical application of THC containing products is not able to cause positive cannabinoid finding in blood or urine. Forensic Sci Int 2017;272:68–71. doi:10.1016/j.forsciint.2017.01.008
- France. Code de la route, Article L235-1 (version in force since 20 August 2026). Légifrance
- France. Arrêté du 13 décembre 2016 fixant les modalités du dépistage des substances témoignant de l'usage de stupéfiants. Légifrance
- Cour de cassation, chambre criminelle. Judgment of 21 June 2023, no. 22-85.530. Légifrance
- Germany. Straßenverkehrsgesetz § 24a and § 24c. gesetze-im-internet.de
- Bundesministerium für Verkehr. Gesetzlicher THC-Grenzwert im Straßenverkehr verkündet. bmv.de
- UK. The Drug Driving (Specified Limits) (England and Wales) Regulations 2014, reg. 2. legislation.gov.uk
- UK. The Drug Driving (Specified Limits) (Scotland) Regulations 2019, reg. 2. legislation.gov.uk
- GOV.UK. Drugs and driving: the law. gov.uk
- Denmark. Færdselsloven § 54 (LBK nr. 118 of 12 January 2026). retsinformation.dk
- Sweden. Lag (1951:649) om straff för vissa trafikbrott, § 4. riksdagen.se
- Legal sources for the other countries are linked in the Legal source column of the driving tables above (official national legislation portals, checked 26 September 2026).
- World Anti-Doping Agency. Prohibited List 2026, S8 Cannabinoids. wada-ama.org
- World Anti-Doping Agency. Technical Document TD2022DL, Decision Limits. wada-ama.org
- Formula Swiss. Certificates of analysis for the products listed above. Test results page
