Dancesafe.org also has test kits (Marquis, Mecke, and Simon's reagents). Ideally you want those and the Mandellin reagent that bunkpolice sells.
The issue with LSD is that in the last few years RCs of similar potency have been discovered and are sold on blotters aslee frequently. The wildly different dose response curves of the phenethylamines from LSD has led to many problems, including fatalities. While there is no readily available reagent test for LSD, but there are several that will react with the various PEA derivatives like DOx, bromodragonfly, and the NBOMes.