Dark Ring in Fina

[drink1]

Newbie to the board, thought I'd ask everyones opinion. I made a batch of fina a couple of weeks ago. Went well looks nice just like beer. I haven't injected yet, still waiting on some other stuff to arrive. Howver, I notice that there is a small dark ring/sediment on the bottom of the vial. I've heard some people say to re-filter, some say it's normal and just shake it up and heat a bit before injecting. I have not yet sterilized, but plan on doing so soon. Any opinions out there as to what I should do??