Blotter
RisksSmall perforated paper squares soaked with liquid LSD, the most common way the drug has been distributed since the 1970s — dose varies by manufacturer and is not visible or verifiable from the paper itself.
Example: The risk isn't just inconsistent dosing — drug-checking services regularly find blotter sold as LSD that tests negative for LSD entirely and positive for NBOMe compounds instead, a different and far more dangerous class of substance active at much smaller doses, sold on identical-looking paper specifically because it can't be told apart by sight. A simple Ehrlich reagent test (LSD turns the reagent purple; NBOMe doesn't react at all) is the standard way to tell the difference before dosing.
What is blotter LSD?
Small perforated paper squares soaked with liquid LSD, the most common way the drug has been distributed since the 1970s — dose varies by manufacturer and is not visible or verifiable from the paper itself.
Is blotter paper always actually LSD?
Not reliably — drug-checking services regularly find blotter sold as LSD that tests negative for LSD entirely and positive for NBOMe compounds instead, a different and far more dangerous class of substance active at much smaller doses, sold on identical-looking paper specifically because it can't be told apart by sight.
How can you tell LSD apart from NBOMe on blotter paper?
A simple Ehrlich reagent test — LSD turns the reagent purple; NBOMe doesn't react at all — is the standard way to tell the difference before dosing.