The Biggest Collection of Reliable Drug Checking Resources Available
Need comprehensive information about drug checking? Check out all the resources below!
Using BTNX Rapid Response Test Strips?
Lab Verified Test Strip Instructions
Can Cannabis and Blotter Be Tested?
Cannabis containing fentanyl, xylazine or other substances has not been confirmed but media stories may lead to questions about contamination of all substances, including cannabis.
Drug Checking Kits and Recommended Instructions
Verified Drug Checking Kits for Harm Reduction
Fentanyl Test Strips
Best for detecting Fentanyl which can be active in very small amounts
Reagent Test Kits
Best for detecting the presence of a wide range of substances. Not ideal for identifying unexpected substances or a drug that may contain multiple substances.
Thin Layer Chromatography/Separation Tests
Best for evaluating a drug expected to contain multiple substances.
Coming Soon!
Coming Soon!
FAQ and Other Resources
Benzodiazapine, Xylazine, and Nitazene test strips are also available and in use by harm reduction agencies. Please use only as instructed, and understand that these strips are not selective and may produce unexpected false positives to unrelated substances (such as diphenhydramine, amphetamines, lidocaine, and caffeine) or improper dilutions.
Peer Reviewed Resources:
- Testing the test strips: laboratory performance of fentanyl test strips
- High concentrations of illicit stimulants and cutting agents cause false positives on fentanyl test strips
- Assessment of two brands of fentanyl test strips with 251 synthetic opioids reveals “blind spots” in detection capabilities
- Evaluating the Sensitivity, Selectivity, and Cross-reactivity of Lateral Flow Immunoassay Xylazine Test Strips
- Nitazene test strips: a laboratory evaluation
More resources to come!