Harm Reduction 101
A living directory of harm reduction resources, testing supplies, recovery services, and educational materials. Bookmark this page — updated throughout 2026 as new resources become available.
Last updated: July 2026
Test Kits & Supplies
All reagent test kits, fentanyl strips, and testing accessories available through our affiliate partner TestKitPlus. Every kit links to a dedicated product page with specifications and usage guidance.
2C-B Test Kit (Robadope Reagent)
Specifically identifies 2C-B and other primary amines. Rules out adulterated psychonaut research chems.
DMT Test Kit (Ehrlich + Hofmann)
Positively identify DMT and distinguish it from other tryptamines with our dual-reagent system.
Fentanyl Identification Test Kit
Liquid reagent test kit to chemically identify fentanyl and its major analogues in any sample.
Folin Reagent Test Kit (Piperazines)
Specialized reagent to detect piperazine-class compounds including BZP, TFMPP, and mCPP.
Froehde Reagent Test Kit
Advanced reagent for identifying synthetic opioids, cathinones, and distinguishing MDMA variants.
GBL Test Kit
Quick chemical screening kit to identify gamma-butyrolactone (GBL) in liquid samples.
GHB Test Kit
Rapid chemical identification test for gamma-hydroxybutyrate (GHB) in liquid and solid samples.
Hofmann Reagent Test Kit
Slow-reacting but definitive reagent for LSD, psilocybin, and other lysergamide/tryptamine identification.
Liebermann Reagent Test Kit
Broad-spectrum general screening reagent for preliminary identification of diverse compounds.
Mandelin Reagent Test Kit
Professional reagent for detecting alkaloids and distinguishing ketamine from its analogues.
Morris Reagent Test Kit
Cobalt thiocyanate reagent purpose-built for definitive ketamine and dissociative identification.
LSD Test Kit — Ehrlich + Hofmann Dual Reagent | Spot NBOMe
Test LSD and distinguish from dangerous NBOMe imposters. Ehrlich confirms indoles, Hofmann confirms LSD specifically. Includes testing surface and color chart.
MDMA Complete Test Kit (Marquis + Simon's + Froehde)
Triple-reagent MDMA verification kit to identify ecstasy, molly, and rule out PMA/PMMA.
Cocaine & Crack Identification Test Kit
Multi-reagent system to positively identify cocaine, crack cocaine, and common adulterants.
Cocaine Cuts Adulterant Test Kit
Specialized screening kit to identify common cocaine cutting agents including levamisole.
Meth/Amphetamine Test Kit Package
Complete multi-reagent package for identifying methamphetamine, amphetamine, and adulterants.
Opioid Identification Test Kit
Professional multi-reagent panel to identify heroin, fentanyl, oxycodone and other opioids.
Heroin Purity Test Kit
Estimate heroin/diacetylmorphine concentration with colorimetric purity assay.
LSD Potency Test Kit
Quantitative assay to estimate LSD concentration on blotter paper or liquid solutions.
Psilocybin Mushroom Potency Test Kit
Estimate psilocybin/psilocin levels in dried mushrooms for informed dosing decisions.
Cannabis (THC) Identification Test Kit
Quick chemical test to verify cannabis/THC presence in plant material and concentrates.
Medetomidine LFA Test Strips — Pack of 10 (Immunoassay)
Rapid lateral flow strips detecting the veterinary sedative medetomidine in drug samples.
Nitazene LFA Test Strips — Pack of 10 (Immunoassay)
Detect potent nitazene-class synthetic opioids with rapid immunochromatographic strips.
Xylazine LFA Test Strips — Pack of 10 (Immunoassay)
Detect the veterinary tranquilizer xylazine ('tranq') increasingly found in the drug supply.
Essential Drug Test Kit (3-in-1)
Starter bundle: Marquis, Morris, and Ehrlich reagents. The three most essential tests.
Pro Drug Test Kit (6-in-1)
Advanced bundle: Marquis, Morris, Ehrlich, Liebermann, Froehde, and Simon's reagents.
Elite Drug Test Kit (10-in-1)
The ultimate lab: 9 reagents covering every drug class plus complete accessories kit.
10mg Micro Scoops (Pack of 10)
Precision measuring scoops for accurate reagent testing. Each scoop delivers ~10mg.
Ampoule Holder/Rack
Secure laboratory rack to hold testing ampoules and reagent bottles during analysis.
Mini Digital Scale (0.001g Precision)
Professional milligram-precision digital scale for accurate sample measurement.
Porcelain Testing Tray — 12 Wells
Professional 12-well white porcelain testing plate for side-by-side reagent comparisons.
Porcelain Testing Tray — 6 Wells
Compact 6-well white porcelain testing plate for personal reagent testing use.
Testing Vials 5-Pack — Glass Ampoules for Reagent & Purity Kits
Replacement borosilicate glass testing vials for all reagent and purity test kits. 5-pack saves money. Essential for multi-substance testing.
Cannabis Test Kit (Potency & Ratio)
Instantly check THC and CBD levels and ratios in your flowers, hash, or concentrates.
Ehrlich Reagent Test Kit (LSD & Indoles)
The gold standard chemical reagent kit to identify LSD, DMT, and other indole compounds.
Fentanyl Test Strips 10-Pack — Detects Below 200 ng
Fentanyl test strips with a detection limit below 200 ng and over 98% accuracy. Tests powders, pills, and liquids. 10 strips with instructions included.
Marquis Reagent Test Kit — Detects MDMA, Meth, Speed & Opiates
The #1 drug checking reagent. Identifies MDMA, amphetamine, methamphetamine, and opiates in 30 seconds. Includes color chart card, testing surface, and instructions.
Cocaine Purity Test Kit — Test at Home in 2 Minutes
Estimate cocaine purity at home with colorimetric testing. Checks for cuts and adulterants — results in under 2 minutes. Ships to US & Canada.
MDMA Purity Test Kit
A professional colorimetric kit to estimate the MDMA concentration of crystals, powder, or pills.
Ketamine Test Kit
Identify ketamine and rule out dangerous synthetic research alternatives.
Simon's Reagent Test Kit
Crucial secondary reagent to differentiate MDMA from MDA, or methamphetamine from amphetamine.
Mecke Reagent Test Kit
An essential reagent for verifying MDMA and identifying dangerous adulterants like PMA/PMMA.
Benzodiazepine Test Kit
A fast chemical screening test to confirm the presence of active benzodiazepines.
Buying Guides & Comparisons
Best Drug Test Kits of 2026: Honest Picks for Every Substance
We compared 40+ reagent kits, fentanyl strips, and purity tests. These are the drug testing kits actually worth buying in 2026, for MDMA, LSD, ketamine, cocaine and more.
Buying GuideBest MDMA Test Kits of 2026: The Three-Reagent Protocol
Marquis + Simon's + Froehde identify MDMA, the purity kit estimates strength, and fentanyl strips screen the powder. The complete molly testing stack, from $5.50.
ComparisonFentanyl Test Strips vs Reagent Kits: Which Do You Actually Need?
Strips detect fentanyl presence for 55 cents a test; reagent kits chemically identify it. We break down when each one is right, and why serious testers carry both.
ComparisonMarquis vs Mecke vs Froehde: Which Reagent Should You Buy First?
The three workhorse reagents compared head-to-head: what each detects, where each one fails, expected color reactions, and the right order to buy them in.
Buying GuideBest LSD Test Kits of 2026: Rule Out NBOMe Before You Dose
Blotter, crystal, or gel: Ehrlich + Hofmann catch NBOMe swaps and confirm LSD chemistry, potency kits estimate dose. The honest LSD testing stack for 2026.
Buying GuideBest Ketamine Test Kits of 2026: Catch the Analogue Swap
2-FDCK, DCK and FXE are routinely sold as ketamine, different potency, different duration, different risks. The reagents that catch the swap, compared.
Buying GuideBest Cocaine Test Kits of 2026: Identity, Cuts, and Purity
Levamisole, fentanyl contamination, and 40%-cut powder: the three cocaine problems, and the $12.50-$25.00 kits that screen for each of them.
ComparisonReagent Test Kit Bundles Compared: 3-in-1 vs 6-in-1 vs 10-in-1
Reagent bundles save money only if the reagents match what you take. 3-reagent vs 6 vs the 10-in-1 elite: what each covers, what it wastes, and the honest value math.
Buying GuideThe Festival Drug Testing Kit: What to Pack for a Safe Weekend
A field-tested packing list for testing at festivals and events: which reagents travel well, the strips worth their weight, and the $90 loadout that covers a whole camp.
Buying GuideHow to Choose a Drug Test Kit: The 5-Question Framework
Reagents, strips, or purity kits? Answer five questions and land on the right testing setup for your substance, budget, and frequency, without buying shelf-warmers.
ExplainerDrug Checking vs Drug Testing: What's the Difference?
Drug checking analyzes a substance for safety; drug testing screens a person's urine or blood. The definitions, every method compared, and where to access each.
Editorial PolicyHow We Test and Choose: Our Methodology and Editorial Standards
How TestSubstances evaluates test kits, verifies facts, handles affiliate relationships, and decides what to recommend. Our standards, in writing.
Buying GuideSafety Strip Kits: Fentanyl, Nitazene, Xylazine & Medetomidine Screening
The drug supply in 2026 demands more than one strip. Which contaminants need their own test, how to panel them affordably, and the protocols that catch what a single strip misses.
Buying GuideDanceSafe vs TestKitPlus vs Bunk Police: Which Reagent Brand Should You Buy?
DanceSafe, TestKitPlus, and Bunk Police compared on price, reaction speed, shelf life, and shipping — with an honest winner for each buying situation, not one blanket brand.
Buying GuideThe Complete Fentanyl Testing Kit: Strips, Reagents & Multi-Panel Options
Fentanyl is no longer just an opioid problem. Build the right fentanyl testing kit with strips, multi-panel strips, and confirmatory reagents. Everything you need in one guide.
Buying GuideMulti-Panel Safety Strips Guide: Testing Fentanyl, Nitazenes, Xylazine & Medetomidine
Multi-panel safety strips let you test for multiple adulterants at once. Complete guide to BTNX dual strips, standalone strips, and how to build a four-panel protocol.
Buying GuideMarquis Reagent: The Complete Guide to the Most Important Drug Checking Tool
Marquis reagent is the Swiss Army knife of drug checking. Complete color chart, MDMA protocol, adulterant detection, shelf life, and where to buy.
Buying GuideEhrlich Reagent Guide: Testing LSD, DMT, Psilocybin, Complete Buying Guide
Ehrlich reagent is the only consumer test that reliably distinguishes LSD from NBOMe compounds. Complete guide with color chart, protocol, and where to buy.
Buying GuideBest 2C-B Test Kits 2026: Catch the Research-Chem Swap
2C-B is a primary amine, most reagents miss it. What Robadope, Marquis, and Simon's each catch, and the buying paths that actually test it.
Buying GuideBest DMT Test Kits 2026: Ehrlich, Hofmann, and What Each Result Means
DMT is an indole, Ehrlich catches it, Hofmann narrows it. Three buying paths from $30.50, with the honest limits of home testing crystal, powder, and carts.
Buying GuideBest Meth & Amphetamine Test Kits 2026: Catch the Speed vs Crystal Swap
Meth and speed are different molecules, and only Simon's separates them. What Marquis, Mecke, and Mandelin each catch, with buying paths from $30.50.
Buying GuideBest Opioid Test Kits 2026: Fentanyl, Nitazenes, and Xylazine
The opioid supply is a multi-layer problem: fentanyl, nitazenes, xylazine, and identity. Here are the strip panels and reagent kits that cover each layer, from $5.50.
Buying GuideBest Psilocybin Mushroom Test Kits 2026: Identity and Potency
Blue bruising is not a test. What Ehrlich confirms, what a potency kit estimates, and the honest limits of home-testing dried mushrooms, from $30.50.
Buying GuideBest Benzo Test Kits 2026: Pill, Powder & Pressed-Bar Screening
Pressed bars are the most counterfeited pill on the market. The benzo screening kit that confirms active benzodiazepines, the strips that catch contamination, and honest limits.
Latest Articles
Psychedelic Tourism in Thailand: The Real Shroom Shake Risk
Mushroom shakes in Thailand are illegal. Selling them risks up to 15 years in prison. The real penalties, 2026 crackdowns, and safer choices.
Teste de Cocaína: Cortes e Adulterantes (Guia 2026)
Cortes como levamisol, benzocaína e fentanil dominam a cocaína de rua. Guia completo de testagem no Brasil: reagentes, fitas de fentanil e o protocolo de 5 minutos.
Guia Completo de Kits de Reagentes (2026)
Como funcionam os reagentes, quais comprar primeiro, custos no Brasil e as limitações honestas, fentanil não é detectado por reagente, pureza não é medida por cor.
Teste de MDMA: Ecstasy, Pastilhas e Cristal (2026)
MDMA é a droga de festa mais falsificada do mundo. Protocolo de teste em 10 minutos: Marquis, Simon's, Froehde e a fita de fentanil que ninguém pode pular.
Carnaval 2026: Guia de Testagem e Redução de Danos
Teste antes do bloco, hidrate em dobro e decore os sinais de emergência. O guia do folião que quer voltar para o Carnaval de 2027.
Fitas de Fentanil: O Que São e Como Usar (2026)
A fita de R$ 15 que salva vidas: como testar, o erro mais comum (falso negativo), limitações com nitazenos e onde comprar no Brasil.
Raves e Festas em São Paulo: Como Se Testar (2026)
A cena eletrônica de SP não tem drug-checking público, teste em casa antes de sair. Kit essencial, protocolo de festa e sinais de emergência.
Rio de Janeiro: Onde Testar e Reduzir Danos (2026)
Bailes, blocos e a noite carioca: como testar em casa, lidar com o calor, e os serviços de apoio que existem na cidade.
Lei de Drogas no Brasil: O Que Você Precisa Saber (2026)
Lei 11.343 explicada sem juridiquês: porte para uso pessoal, a fronteira usuário/traficante, a zona cinza do 'era pra mim' e a legalidade da testagem.
Teste de LSD: NBOMe e Reagentes (2026)
A maioria do 'ácido' contém NBOMe, com dose letal perto da dose ativa. Ehrlich é o único teste confiável, e o sabor metálico é o alerta clássico.
Onde Conseguir Kits de Testagem no Brasil (2026)
Não existem grandes varejistas de reagentes no Brasil. Fornecedores confiáveis, o que verificar, custos, importação e como evitar golpes de 'kit nacional'.
Drogas Sintéticas nas Festas 2026: O Que Está Circulando
Fentanil fora dos opioides, nitazenos, xilazina, catinonas e pink cocaine: o panorama do suprimento em 2026 e o kit de proteção que cobre a nova cena.
Harm Reduction Organizations
26 vetted organizations providing testing services, overdose prevention, policy advocacy, and peer support worldwide.
Harm Reduction International (HRI)
"Harm Reduction International is a leading NGO dedicated to reducing the negative health, social and legal impacts of drug use and drug policy."
Global policy advocacy, overdose surveillance, human rightsInternational Drug Policy Consortium (IDPC)
"A global network of over 190 NGOs that promotes objective and open debate on drug policy."
Policy reform, advocacy resources, global reportsGlobal Commission on Drug Policy
"The Global Commission on Drug Policy is an independent body comprising former heads of state, political leaders, and intellectuals."
Evidence-based policy recommendations, landmark reportsTalkingDrugs
"TalkingDrugs provides news and information on drug policy and harm reduction from around the world."
News, regional harm reduction updates, translated contentRecovery, Tapering & Support
Medically-Supervised Benzodiazepine Tapering
The Ashton Manual method — equivalency tables, sample schedules, supplements, and emergency warning signs.
🇺🇸SAMHSA National Helpline
Free, confidential 24/7 treatment referral and information. 1-800-662-HELP (4357). English and Spanish.
🇨🇦Health Canada — Substance Use Support
Government resources for substance use treatment, harm reduction, and recovery services across Canada.
🧠SMART Recovery
Science-based mutual support groups for addiction recovery. Online and in-person meetings worldwide.
📖The Ashton Manual
The definitive clinical guide to benzodiazepine withdrawal by Prof. Heather Ashton. Free, peer-reviewed, the gold standard.
📋Full Harm Reduction Directory
All 26 organizations, taper schedules, and emergency resources on our dedicated Resources page.
Emergency & Support Hotlines
🇺🇸 SAMHSA (US)
24/7 treatment referral, English & Spanish
🇺🇸 Never Use Alone
Overdose prevention hotline — stays on the line while you use
🇺🇸 Fireside Project
Psychedelic peer support — free, confidential
🇨🇦 Crisis Services Canada
Suicide crisis helpline — 24/7, bilingual
🇨🇦 BC Alcohol & Drug
Substance use info and referral, 24/7
🇬🇧 Talk to Frank (UK)
Honest info about drugs — 24/7 helpline
Reagent Reaction Reference
Complete color reference chart for Marquis, Mecke, Mandelin, Froehde, Simon's, and Ehrlich reagents across 25+ substances. Essential companion for any testing kit.
Open Reaction ChartBenzo Tapering & Medical Resources
Benzodiazepine withdrawal can be life-threatening. These resources follow the Ashton Manual protocol — the clinical gold standard.