how to authenticate sn?

[Bobert_Beniro]

One person wrote that he bought sn in the same country as me, but he checked it and it turned out to be fake. He failed a blood test. But I've heard that nitrate and nitrite both change the color of blood the same way, and nitrite tests may not be accurate. How then to be?

 

[Pidgeons_Sparrows]

Appearently blood test is useless due to the reasons you said

I think aquarium test is the one that you should be going for but I dont remember the details
Just type aquarium test into the search bar on here

 

[GasMonkey]

Lab test.