Drug Purity Report Week 34, 2026

Drug Purity Report #34/26. In this week’s report on drug market purity we are shining spotlight on fake hash, extreme MDMA pills and more PMMA.

Data fatigue is real, so here we come to give you the gist of what’s going on out there. For more details, photos, and other information on thousands of drugs, head out straight to the DrugsPRO app.

1. A fake hash sample found in Zurich contained 2 different synthetic cannabinoids: MDMB-4en-PINACA and ADB-4en-PINACA. We remind all cannabis users that with the current availability of CBD, the financial incentive is much higher to sell synthetic cannabinoids than real classic THC products.
2. Pills closing in on almost 300 mg of MDMA detected in Spain’s Tarragona and in Basel, Switzerland. The first is a gray Grim Reaper with “350mg” stamped (283 mg MDMA detected), and the other an orange Master Roshi (260 mg MDMA).
3. Although PMMA was not detected this particular week, due to more samples detected in the recent days we are repeating the warning. PMMA has been found in multiple samples this year. It has hardly any expected effects of MDMA, while having plenty of the undesired effects. Using a test kit is essential to reduce the risk of PMMA poisoning.

Last Week at a Glance

• 57 samples from 5 countries (Austria, France, Slovenia, Spain and Switzerland) were included this week.
• 48 samples contained a quantified result, including 10 pills and 3 LSD samples.
• 13 samples contained more than one detected ingredient.
• LSD median purity/content is 230µg, compared with 70µg in the yearly reference period.

Key Purity Differences

• LSD median purity/content is 230µg, compared with 70µg in the yearly reference period.
• MDMA median purity/content is 178mg, compared with 160mg in the yearly reference period.
• Mephedrone median purity/content is 79%, compared with 88% in the yearly reference period.

Purity and Content

Median quantified results for 17–23 August 2026. The yearly reference is shown in parentheses where sufficient comparison data is available.

Samples	Substance	Typical purity / content
9	MDMA	178mg (160mg*) Middle 50%: 143–198mg ▲
6	Cocaine	94% (86%*) Middle 50%: 83–96.8% ▲
3	Ketamine	100% (94%*) Middle 50%: 90.5–100% ▲
3	LSD	230µg (70µg*) Middle 50%: 216.5–253.5µg ▲
3	Mephedrone	79% (88%*) Middle 50%: 40.5–89.5% ▲

How to read this: Bold = this week’s median (typical) result; “Middle 50%” = half of the results; (*) = median from the last 365 days; ▲/▼ = higher/lower than last week.

Most Common Adulterants and Other Impurities

Across the last 365 days, 1,926 mixed samples contained 139 distinct additional ingredients.

Samples	Additional ingredient	Share of substance mixtures	Most often found with
675	Caffeine	83.2% ▲ of amphetamine samples	Amphetamine, Heroin, MDMA
264	Unknown	25.4% ▼ of MDMA samples	MDMA, Mephedrone, 2C substances
159	Paracetamol	81.7% ▼ of heroin samples	Heroin, Cocaine, Ketamine
114	iso-LSD	95% ▲ of LSD samples	LSD
112	MDMA	44.9% ▼ of ketamine samples	Ketamine, 2C substances, Mephedrone
105	4-CMC	36.9% ▼ of mephedrone samples	Mephedrone, MDMA, Ketamine
100	Ketamine	18.5% ▼ of MDMA samples	MDMA, Amphetamine, Cocaine
96	Procaine	32.5% ▼ of cocaine samples	Cocaine, Ketamine, MDMA
63	2-MMC	14.4% ▼ of mephedrone samples	Mephedrone, MDMA, Ketamine
63	Phenacetin	16.4% of cocaine samples	Cocaine, Heroin, Ketamine
58	Levamisole	20.4% ▲ of cocaine samples	Cocaine, Ketamine
44	Cocaine	13% ▲ of ketamine samples	Ketamine, Heroin, Amphetamine
43	Amphetamine	5.7% ▼ of MDMA samples	MDMA, Ketamine, Cocaine
38	4-BEC	20.3% ▼ of mephedrone samples	Mephedrone
37	2C-B	9% of MDMA samples	MDMA, Ketamine, Amphetamine
33	4-MMC	6.3% ▲ of MDMA samples	MDMA, Ketamine, Cocaine
33	DPIA	7.5% ▼ of amphetamine samples	Amphetamine
29	1-PEA	6.4% of amphetamine samples	Amphetamine, MDMA
27	d-8-Tetrahydrocannabinol	31.8% of THC samples	THC/cannabinoids
22	NEP	6.4% ▲ of mephedrone samples	Mephedrone, MDMA, Ketamine

▲/▼ shows whether its share in the rolling 365-day data increased or decreased since last week. No arrow means no change or no comparison.

Impurities Detected This Week

MDMA: 2-MMC (1), 4-MMC (1)

Cocaine: Phenacetin (1), Procaine (1)

Ketamine: 2-MMC (1)

LSD: iso-LSD (2)

THC/cannabinoids: ADB-4en-PINACA (1), Freies Cbd (1), MDMB-4en-PINACA (1)

Mephedrone: 4-CMC (1), MDMA (1), Unknown (1)

Remaining detected substances: 2-MMC (7), 3-CMC (2), 4-CMC (8), 4-HO-MET (1), GBL (1), NEP (5), Paracetamol (1), Unknown (3)

Data Sources

This report is based on drug-checking data published by: (Bern, (Lausanne) École des sciences criminelles (ESC), (Luzern, (Zürich) Reseachem GmbH, addiction-neuchatel.ch, ailaket.com, Basel) IRM Basel, Biel) Pharmazeutischen Kontrolllabor Bern, checkit.wien, contact-suchthilfe.ch, DIZ / Saferparty, drogart.org, drogenarbeitz6.at, drugchecking.berlin, drugchecking.ch, druglab.fr, energycontrol.org, knowyourstuff.nz, neutravel.net, nightlifevaud.ch, nuit-blanche.ch, raveitsafe.ch, saferdancebasel.ch, saferparty.ch, stoftest.org, tragwerk-luzern.ch, Trimbos, Trimbos NL, triptalks.at, Université Lausanne, wedinos.wales.

All of this data is available at your fingertips in the DrugsPRO app for Android, iOS, and the web.

Drug-checking results describe tested samples only and are not representative of the entire market.