Blood in Semen

Blood in the sperm might occur for harmless reasons. Often no cause can be found. It will usually go away on its own. If it does not or if it comes back, see your urologist for further evaluation.

Infection can cause hematospermia, especially in younger men, but usually has other symptoms too. Prostate surgery or biopsy can cause blood in the sperm for several weeks. Hematospermia might be caused by something as simple as a broken blood vessel.

If there is a lot of blood in the sperm or blood keeps coming back, more thorough tests might be needed. This could be a warning sign for cancer, but the risk is low.

Other causes include:

Surgery of the penis, testicles, or prostate

Infection in the lower urinary tract

Sexually transmitted disease

Excessive or interrupted sexual activity or prolonged abstinence