As mentioned on the product page, the LSD test kit is to test LSD. It says that 1P-lsd, which is a pro-drug of LSD does not react to the test. (See text ) a prodrug means that it is converted into lsd only after it is ingested and metabolised in the liver. Hence it does not react to an Erlich/hofmann test. Our 1cP-lsd comes from the most reliable RC lab. So there is no need to test our blotters and or pellets.