ambassador-of-funk said:
as opposed to be that derivative of amphetamine, it is only amphetamine, or in some cases pure ampthetamine. MDMA testing kits come in handy, will show if the pill is pure or not. Or you can just buy straight MDMA as opposed to E
No, they will not show if the pill is pure.
MDMA kits will tell you if the pill contains MDMA, but it will not (necessarily) tell you exactly what else is in it. There are tests which will detect other common chemicals like Ketamine, Speed etc, but only a full laboratory test will tell you exactly what else is in there.