Brief Answer: Be calm and relaxed.could be an incidental finding Detailed Answer: Hi and thank you so much for this query. I am so sorry to hear about this troubling observation. The colour of semen is not black and this rarely happens. I have no idea what could have caused this because it has not been described before. I have a strong feeling that was just an incidental finding and not something that would continue and go on. My suggestion would be that you observe what you semen looks like after ejaculating next time. You may want to do a masturbate and ensure a clean catch in a transparent tube for observation. If it still turns out to be black, then i will propose that you send it in for analysis. Here, they would be able to examine and find out whether there is an infection or not. If it is no longer black, then could have been an incidental finding and not a problem to worry about. I hope you find this helpful and it addresses your query fully. Thank you so much for using our services and feel free to ask for more information and clarifications if need be. I wish you the best of health. Dr. Ditah, MD

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