First Time Testing. Need help quick before upcoming concert!

[gumbutroids]

Supposedly, I got some MDMA powder. I bought just the Mecke test from DanceSafe. Have done moon rocks a couple times in the past, but never powder. Tested the powder several times, always goes straight to black really quickly. Upon closer inspection and swirling around, it looks more dark purple than black and seems to have a hint of blue. Never saw the green color, always straight to dark purple. This is my first post and I'm still learning, but will try to pay picture. I'm not sure what I got. Please help identify or suggest what I can do to be sure of what it is. Thanks!

 

[gumbutroids]

Here's a picture...http://s18.photobucket.com/user/Hoppapotamus/media/goodmecke.jpg.html