Bloodtest and COA of SN

[DimaD]

So I did a blood test today with my SN. I also asked for a COA for my SN from the manufacturer. He sent me it and it say that it is at least 98,5% pure. I did a Aquarium test a while ago. It didn't work properly because the nitrite level was too high. As a result, the nitrate test also showed a false positive due to interference from the excess nitrite. The stripes were from RUNBO.

So can I trust that it is pure enough?

Spoiler: Blood test

 

[Alexandra0]

My blood also turned dark. But not all people consider blood tests a reliable method of checking

 

[DimaD]

My blood also turned dark. But not all people consider blood tests a reliable method of checking

I know. I also got a COA for the SN . The manufacturer is reliable but still I always overthink it

 

[Alexandra0]

I know. I also got a COA for the SN . The manufacturer is reliable but still I always overthink it

My SN also says 98.5% purity.
I just really want this method to work