Anonymous
Hi there I have asked other organizations with said it wasn't a risk as blood would be outside the body can you answer this for me please I really greatful 

I was sniffing cocaine not sharing a sniffing equipment I put the cocaine on my finger to snort although if there was lot of blood I would noticed but could been drops of blood mixed in with the cocaine then I've sniffed it up my nose so I'm concerned and worried although I've been told it isn't if it isn't why is this even if blood drops was mixed in with cocaine and then seconds later I sniffed it up please help 
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helpline-volunteer
Hi there,

Thank you for your inquiry. From what we gather from the question, you were asking about the possibility of HIV transmission through snorting cocaine that may have been contaminated with HIV positive blood. From the information provided, this scenario is determined to be No Risk (transmission of HIV is not possible in the given scenario).

From the HIV Transmission Equation (see image below), HIV transmission requires a bodily fluid (e.g. blood) that has direct access to the bloodstream (e.g. via open cuts and sores, sexual organs, mucosal membranes, etc.) through an High/Low/Negligible activity. You mentioned that you did not share sniffing equipment with another person. That is very important in terms of minimizing the possibility of HIV (as well as Hep C) transmission between individuals. Sharing equipment could have allowed for HIV positive fluid to have entered your nasal passage, and since snorting cocaine can cause blood vessels in one's nose to dilate and rupture (1), that could have facilitated HIV transmission.

If there was indeed dried HIV positive blood contained in the cocaine, an important consideration is the fact that HIV is extremely sensitive to the outer environment. Exposure to oxygen in the air causes HIV to undergo a rapid reduction in concentration (1). From the CDC, HIV contained in a fluid has a rapid (within several hours) reduction in concentration of 90-99%, which would render it inactive (2).

Recommendation: No need for HIV test with the scenario provided, refer to a healthcare professional for other health related questions. 

Best regards,
AIDS Vancouver Online/Helpline, Shirley

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Helpline Transmission Equation  (1).jpg
Additional Resources: 
(1) Hepatitis C: An In-Depth Guide
(2) HIV Environmental Exposure
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