Various harm-reduction organisations like DanceSafe[1] offer testing kits that can be used to determine the primary agent and any significant adulterants[2].
There are also testing labs which process anonymous samples sent by post and determine the active agents. For example, http://www.ecstasydata.org/ Due to the complicated issues of the legality of illegal drug analysis, they can provide only ratios of active agents, rather than quantifiable values[3].
A quick look doesn't turn up any testing kits for LSD detection (or rather, the only ones that do are intended for testing people, rather than the drug itself)
There are also testing labs which process anonymous samples sent by post and determine the active agents. For example, http://www.ecstasydata.org/ Due to the complicated issues of the legality of illegal drug analysis, they can provide only ratios of active agents, rather than quantifiable values[3].
A quick look doesn't turn up any testing kits for LSD detection (or rather, the only ones that do are intended for testing people, rather than the drug itself)
[1] http://dancesafe.org/
[2] http://dancesafe.org/products/testing-kits/complete-adultera...
[3] http://www.ecstasydata.org/about_data.php#quant