Testing Your Substance
You can't tell what's in a substance by looking at it. Reagent testing and fentanyl test strips take a few minutes and give you something close to certainty. Do this before every journey.
Why testing matters
The illicit drug supply is unpredictable. Substances get misrepresented, mislabeled, and adulterated — sometimes by accident, sometimes not. NBOMe compounds are sold as LSD. Synthetic cathinones show up as MDMA. Fentanyl appears in almost everything pressed into pill form. Even sources you trust can unknowingly pass along something different from what they think it is.
Reagent tests identify the likely presence of specific compounds. They're not perfect — they can't test for every possible adulterant, and they can't tell you dose or purity — but combined with a fentanyl test strip, they give you a meaningful picture of what you're actually working with.
Test every substance, every time — even from a source you've used before. Batches vary. What worked last time may not be what's in front of you now.
Where to get test kits
These are Pada's two trusted partners for harm reduction testing supplies:
Fentanyl test strips
Use fentanyl test strips on any powder, pressed pill, or unknown substance — regardless of what it's supposed to be. This is separate from reagent testing and takes two minutes.
How to Read a Fentanyl Test Strip
Dissolve a small sample in water. Dip the strip for 15 seconds. Wait 2–5 minutes.
If fentanyl is detected, do not use. No psychedelic experience is worth the risk. Contact your local harm reduction organization for safe disposal guidance.
Reagent testing by substance
Different substances require different reagents. Use the protocols below for your specific substance. Always test on a white ceramic plate in good light.
LSD / Blotter
2 reagentsIf the tab tastes bitter or metallic, spit it out immediately. That's a strong indicator of NBOMe, not LSD.
Mushrooms (Psilocybin)
1 reagentReagent testing cannot identify mushroom species. Never consume wild mushrooms unless you have expert-level identification certainty.
MDMA / Molly / Ecstasy
3 reagentsEven if reagents suggest MDMA, also use a fentanyl test strip. Fentanyl in pressed pills is not detectable by reagents alone.
DMT
1 reagentMescaline / Cactus
1 reagentKetamine
2 reagentsGeneral testing best practices
- Use a white ceramic plate — color changes are easiest to read against white
- Work in good light — natural light if possible
- Start with a tiny amount — reagents are corrosive and a small sample is enough
- Test reagents separately on separate samples, not combined
- Wear gloves — reagents can burn skin on contact
- Store reagents in a cool, dark place; check expiration dates
- Dispose carefully — neutralize with baking soda, then rinse
- Take a photo of results for your records
- If results are unexpected or unclear, do not use. Consider sending to a lab (DrugsData.org, WEDINOS)