A member asked:

Dear doc why do i find little grey/black dirt like little spot, just one or two in my pre-cum, i always find it every masturbate, no pain, burning, yellow discharge, my urination is normal,so is this bacteria? prostat ? virus ? std ? thnk doc?

A doctor has provided 1 answer
Dr. Hiep Le answered

Specializes in Nephrology and Dialysis

To tell you the truth, I do not know what those materials are but one thing I can say for sure those are not caused by the urogenital infection by whatever organism which you are afraid of.

Answered 7/24/2022

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