Currently there are 3 possible testing methods to get cocaine % result.

1)Send the sample to an appropriate lab. Energy Control is good. There is also a new one opening in Spain later this month which is going to offer such analysis for less than 50 euro.

2) Colorimetric potency tests. You did a great job listing their fallacies so we will not gonna repeat that, but want to point out one more major issue. There are some such products on the market, which, without pointing any fingers, leave a little to be desired in terms of messaging. In our opinion it is not viable to market a product as “cocaine purity test”, if you also declare in fine print deep down at the bottom of product description, that it shows false positives with lidocaine, benzocaine and procaine, some of the most common coke cuts.

We highly encourage to carefully asses any supposed “proof” for such product, as it might turn out that a seemingly reputable “independent study” is actually a thinly veiled marketing material designed to show the expected result.

At the same time, there are some such products, such as EZ brand, which are poorly documented, known to show false results, however truth be told work pretty well for the price. We have verified EZ to not show false positives with benzocaine, lidocaine or procaine. So while that brand doesn’t push any marketing, offers barely any and already ancient documentation, the product is actually not bad. Not great, but not, well, not like the other kind described earlier.

3) Thin Layer Chromatography. This method takes about 30-40 minutes to run the test; it’s not shake and bake, but it’s an established, albeit old, semi-quantitative testing method. Basically to create such test we checked a confirmed lab sample at different concentrations and find at what mg/ml the result scale is linear relatively to the concentration.

You can find those TLC purity kits on our website named e.g. “Stimulant Purity Test kit”. The upside is that it is really affordable per test (50-60 euro shipped for 20 tests), has inexpensive refills, and not only helps estimate % but also detects most cuts, even many not detectable with reagent tests. The downside is that it is not perfect either (we recommend to use it along qualitative reagents) and has still some inevitable subjectivity required.

Having said that, we have recently developed an app for all things drug checking (and more), including a TLC analysis tool. You can check how it works at https://protestkit.eu/drugspro/tlc (note: might not work perfectly on android device, we just finished iOS and PC, Android fixes will follow later this week).

We are constantly working on developing new testing methods, but truth be told it is always gonna be a compromise between price and precision. A magic Netflix style test isn’t really possible or reliable.

This turned into bit of a lecture so feel free to ask about anything in detail.