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Is it possible to get infected from a drop of dry blood on a derma roller?

Question: 

hi Ist possible to get infected of hiv on a derma roller if someone put a drop of blood on it? Ive ordered a derma roller, sealed and new but upon opening I saw some kind of dried blood thing on it, not sure , it looks like a blood or rust.i got my facial hair newly shaved that day but i cant remeber if I cut my self, then after 2 weeks I got a mild cough but not a dry cough since it has some plem..that goes on for a couple of weeks well its like a morning sickness that I feel it in the morning and at sometime of the day, since Im from a tropical country so I leave my window open at night since its summer it gets hot at night, then after a month I got my self tested Test Results

SEROLOGY
HIV 1 & 2 (Quali)
Method Immunochromatography
Kit RIGHT SIGN HIV 1/2

HIV Result NONREACTIVE NONREACTIVE
RPR <1:1 NONREACTIVE NONREACTIVE
TP-PA (Qualitative) <1:80 NEGATIVE NEGATIVE
HBsAg(RAPID)Screening NONREACTIVE NONREACTIVE

ist conclusive? and also if i think i got expose to virus 6 yrs ago which im not sure if I got expose ist also conclusive? thanks..

Answer: 

Hello,

Thank you for your inquiry. From what we gather from the question, you were asking about the chance of acquiring HIV from using a derma roller. From the information given, this scenario is determined to be No Risk meaning that transmission of HIV is not possible in the given scenario.

The scenario mentioned above does not meet the three components of the transmission equation. HIV is rendered inactive when exposed to oxygen meaning that dried blood is not a fluid that can transmit HIV. Also, the activity described above does not allow for direct access to enter the bloodstream.

https://www.aidswindsor.org/healthy-me/hiv-transmission/

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

Regards, AIDS Vancouver Helpline/Online, Marie