This concerns me.... not the fact that there was no reaction, but rather the fact that you don't even know what drugs your test kit can detect. There are colour charts, instructions and information available to tell you what the kit is good for!!
With the Chemical Generation kits, there are 2 (E1 and E2)
E1 is a marquis reagent test, which means it is going to test for MDMA, MDA, MDEA, 2C-B, Speed, and DXM.
so the answer is no, you can't detect everything with an E1 kit, but if you had read the instructions, you'd already know that.
TheGamer