Urethritis can cause blood to appear in urine and semen. Skip to main content. Advertising Mayo Clinic is a nonprofit organization and proceeds from Web advertising help support our mission. The urethra is the tube that carries urine and semen out of the body. Eating foods that contain yellow dyes can turn your semen yellow.
Why Is There Blood in My Semen? 8 Possible Causes
Cancers are rarely causative and account for a very small percentage of hemospermic diagnoses. In addition to blood in semen, this condition causes pain upon ejaculation and urination. Some urologists recommend transrectal ultrasounds to look for stones and cysts in the prostate, seminal vesicles and ejaculatory ducts. Injuries to your spinal cord may result in dark brown- or black-colored semen. Men's Health What can cause a testicle lump? This may result from exposure to contaminated food, water, or other environmental factors.