How can I tell if cocaine has fentanyl in it? This topic has 1 reply, 2 voices, and was last updated 4 years, 4 months ago by bt1978. Viewing 1 reply thread Author Posts August 25, 2020 at 10:06 am #6106 carlostevezfan32Participant Just worried and would like some advice if this has fentanyl in it and how much does kill you? It’s a half of coke? August 25, 2020 at 5:37 pm #18614 bt1978Participant Hey Fentanyl makes an appearance almost everywhere these days it seems, largely as its relatively cheap and very powerful. I don’t think there is a way to know whether its mixed in unless it was sent to a lab for analysis Can I ask what is worrying you Author Posts Viewing 1 reply thread You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In