Reagent Testing

What is reagent testing?

Reagent testing uses chemical solutions that produce specific color changes when they react with particular substances. It is a form of presumptive testing — it can indicate the likely presence (or absence) of a substance, but does not determine purity or exact dosage.

Common reagent tests used in the psychedelic community:

• Ehrlich reagent — turns purple in the presence of indole compounds (LSD, psilocybin, DMT)
• Hofmann reagent — provides additional confirmation for indoles with different color reactions
• Marquis reagent — useful for identifying MDMA, amphetamines, and some other compounds
• Mecke reagent — helps distinguish between different substance classes

Why it matters for microdosing

For those microdosing with substances acquired outside of clinical or legal settings, reagent testing is a fundamental harm reduction practice:

• Identity verification — confirms that what you have is what you think it is
• Adulterant detection — can reveal the presence of unexpected substances like NBOMe compounds (which can be dangerous)
• Peace of mind — reduces anxiety about substance identity, supporting a better set and setting
• Community safety — normalizes testing culture and reduces overall risk

How it works in practice

1. Acquire test kits — available from organizations like DanceSafe, Bunk Police, or similar services
2. Follow instructions precisely — use small samples, appropriate surfaces (ceramic plates), and proper lighting
3. Compare colors — match the reaction color against the provided chart
4. Use multiple reagents — no single reagent is definitive; use 2–3 for better confidence
5. Understand limitations — reagent tests cannot tell you dosage, purity percentage, or detect all possible adulterants

What to watch out for

• Expired reagents — they degrade over time and can give false results; store in freezer, replace regularly
• False confidence — a positive reagent test does NOT mean a substance is safe or correctly dosed
• Mushroom specificity — Ehrlich can confirm indole presence in mushrooms, but cannot distinguish psilocybin species from other indole-containing fungi
• For more definitive analysis, consider laboratory testing services like Energy Control or DrugsData