Hello!
As Praxis said, the 84% number is sort of misleading, MDMA can be 100% pure, but being in salt form, part of that weight is the HCl salt ion. But for all purposes you can ignore that.. For example, when you read that a dosage = 100mg, you don't have to make a calculation considering it's 84% therefore you actually need to consume 119mg, no! You only need to consume 100mg, since 100mg is a dose of MDMA HCl, already considering part of the weight is HCl.
That being said, apart from the HCl ion, not all MDMA available is totally pure. The main adulterants found in street MDMA are:
-Cathinones and other NPS (substances with varying safety profile, some are safe, some are less safe, some are similar to MDMA in effects, some are more stimulating like meth or speed)
-caffeine (will increase heart rate)
-phenacetin (carcinogenic and toxic to kidney with long term use)
-paracetamol (not really a concern in these dosages but toxic to liver with long term use)
In Spain, about 10% of MDMA samples are totally some other substance, another around 10% are MDMA+adulterant, and 80% are unadulterated MDMA. Pills are generally less pure than MDMA powder. (source,
Energy Control statistics 2015). Other countries may have different statistics but this can give you an idea at least.
As for testing your sample, you can send to Energy Control to
get it tested at a professional lab and get your results for 70e . Legally, the problem of sending scheduled drugs over post is mostly on the receiver end, since during transit it may be checked by the police, but Energy Control has authorization from the government so it isn't a problem for them. On the user end, just send it with a fake return address, and as soon as it's out of your hands, you're safe. Nowhere in a post office they will open the package and see what is inside while you are still there sending the package, that is done after.. So your 'danger' will be only transporting from your house to the post office. (This is slightly pushing the rules here but very relevant to the question and I think for overall safety of people and in favor of harm reduction it's something I need to mention)
If you don't want to spend all that money for doing a single test, you can buy a TLC kit (
Seller 1, and
they will also be selling starting this summer) TLC kits are great because they can separate the different components of a sample so they will tell you if your sample is mixed, adulterated, and this eliminates a lot of false positives that you might have with simple reagent tests. If you get a TLC kit, I suggest getting just the Kit with no reagents, and buying the reagents separately. As for what reagents you should buy to go together with your TLC kit, check the flow charts
here. So for example in the case of MDMA, Marquis Mecke and Simons is the minimum 3 reagents you should use. If you are planning on testing different drugs, I suggest getting all the reagents you can, the more the better.
Lastly regarding testing, if you want the simplest and cheaper option to test for a home user, then you should get a set of reagents and test your sample with all of them. Depending on what you test. You can get those set of reagents
here. They already come with a set of reagents that are ideal for each substance, it's very cheap and this will eliminate a lot of false positives which can happen if you just test with one reagent. It's not as good as testing with TLC+set of reagents, but it's simpler, much cheaper and much better than not testing at all or testing with just one reagent.
As for how to do a therapeutic use, it depends what do you want the therapy for. Of course it would be better to have someone to talk to during the experience, also because MDMA is a very social drug in general, but if there is absolutely no way you can find someone, you could at the very least try to write down all your emotions during the experience and try to express what you feel. You could also join our
chat and have some interaction with the users who are online, and you may get some of the love that is good to have when you are taking MDMA.
Good luck!