What Is Blood in Semen?

Blood in semen is medically known as hematospermia or hemospermia. It may appear as:

• Bright-red streaks
• Pink semen
• Red or rust-colored semen
• Brown semen
• Small blood clots
• Blood detected only through laboratory testing

Bright-red blood may indicate more recent bleeding, while brown or rust-colored semen often represents older blood.

A single episode is frequently not caused by a serious condition, but medical evaluation is recommended—especially when it recurs or occurs with other symptoms.

Where Does Blood in Semen Come From?

Semen contains fluid produced by several structures, including:

• Prostate
• Seminal vesicles
• Testicles
• Epididymis
• Vas deferens
• Ejaculatory ducts
• Urethra

Inflammation, infection, injury, blockage, or abnormal tissue in any of these areas may cause blood to appear during ejaculation.

Common Causes of Blood in Semen

Prostatitis

Prostate inflammation or infection is a common possible cause.

Associated symptoms may include:

• Pelvic or perineal pain
• Painful ejaculation
• Burning during urination
• Frequent urination
• Weak urine flow
• Fever or chills in acute infection
• Lower-back discomfort

Seminal Vesicle Inflammation

The seminal vesicles produce a significant portion of seminal fluid. Infection, inflammation, cysts, or obstruction may cause recurrent or persistent hematospermia.

Urinary Tract Infection

A UTI may cause blood in the semen together with:

• Painful urination
• Urinary urgency
• Frequent urination
• Cloudy urine
• Blood in the urine
• Pelvic discomfort

Sexually Transmitted Infection

Possible infectious causes include:

• Chlamydia
• Gonorrhea
• Mycoplasma genitalium
• Trichomoniasis
• Other organisms associated with urethritis

STI testing may be appropriate after a new exposure or when discharge and urinary burning are present.

Recent Urological Procedure

Temporary blood in the semen can occur after:

• Prostate biopsy
• Cystoscopy
• Catheterization
• Vasectomy
• Prostate surgery
• Radiation treatment
• Urinary instrumentation

Following prostate biopsy, semen may remain discolored for several weeks.

Prostate Enlargement

Benign prostate enlargement may contribute to:

• Weak urine flow
• Nighttime urination
• Urinary straining
• Incomplete bladder emptying
• Blood in semen or urine

Ejaculatory Duct Obstruction

A blockage involving the ejaculatory ducts may be associated with:

• Low semen volume
• Painful ejaculation
• Infertility
• Recurrent hematospermia
• Pelvic discomfort

Trauma or Intense Sexual Activity

Possible causes include:

• Genital injury
• Pelvic trauma
• Vigorous sexual activity
• Prolonged sexual abstinence followed by ejaculation
• Intense exercise
• Injury during masturbation

Medication and Bleeding Disorders

Blood-thinning medication and clotting disorders may increase bleeding.

Patients should disclose:

• Aspirin
• Warfarin
• Clopidogrel
• Apixaban
• Rivaroxaban
• Dabigatran
• Supplements affecting bleeding

Do not stop prescribed medication without medical guidance.

Tumors

Rarely, blood in semen may be associated with prostate, seminal vesicle, testicular, bladder, or urethral tumors.

Risk assessment becomes particularly important when hematospermia is:

• Persistent
• Recurrent
• Accompanied by blood in the urine
• Associated with a lump
• Present in an older patient
• Associated with unexplained weight loss
• Accompanied by an abnormal PSA or prostate exam

Symptoms That May Occur With Hematospermia

Additional symptoms may include:

• Blood in the urine
• Pain during ejaculation
• Painful urination
• Frequent or urgent urination
• Pelvic or perineal pain
• Lower-back pain
• Testicular pain or swelling
• Urethral discharge
• Fever or chills
• Weak urine flow
• Difficulty urinating
• Groin swelling
• Reduced semen volume

The accompanying symptoms often guide testing.

When Should You See a Urologist?

Arrange a urology evaluation when:

• Blood appears in the semen for the first time
• It occurs repeatedly
• It continues for several weeks
• Blood is also present in the urine
• Ejaculation is painful
• Urinary symptoms occur
• Fever or chills are present
• A testicular or prostate abnormality is known
• You take blood-thinning medication
• You are concerned after a recent procedure
• Fertility is affected

MedlinePlus recommends contacting a medical professional after noticing blood in the semen. MedlinePlus: Blood in Semen

Blood in Semen Diagnosis in Busan

A urologist may review:

• Color and amount of blood
• Number of episodes
• Pain during ejaculation
• Urinary symptoms
• Recent sexual exposure
• Recent injury
• Previous procedures
• Medication use
• Prostate history
• Fertility concerns
• Family cancer history

Diagnostic evaluation may include:

• Physical examination
• Digital rectal examination
• Urinalysis
• Urine culture
• STI screening
• PSA blood test
• Complete blood count
• Clotting tests
• Semen analysis or culture
• Scrotal ultrasound
• Transrectal prostate ultrasound
• Prostate or pelvic MRI
• Cystoscopy in selected cases

Not every patient requires every examination.

Physical and Prostate Examination

The doctor may examine:

• Penis and urethral opening
• Testicles and epididymis
• Groin lymph nodes
• Scrotum
• Prostate
• Lower abdomen

A digital rectal examination may assess whether the prostate is enlarged, tender, firm, or irregular.

Urine and STI Testing

Urinalysis and culture may identify:

• Urinary infection
• Blood in the urine
• Inflammation
• Other urinary abnormalities

First-catch urine or swab testing may be used for STIs when indicated.

PSA Testing

PSA may be considered according to:

• Patient age
• Prostate examination
• Recurrent symptoms
• Family history
• Previous PSA results
• Urinary symptoms

PSA can be elevated because of infection, inflammation, enlargement, procedures, and cancer. An abnormal result requires interpretation rather than immediate assumptions.

Semen Analysis and Culture

Semen testing may evaluate:

• Blood cells
• White blood cells
• Sperm parameters
• Semen volume
• Signs of inflammation
• Bacterial growth when culture is requested

A semen analysis is particularly relevant when hematospermia occurs with fertility concerns or low semen volume.

Ultrasound and MRI

Scrotal Ultrasound

Scrotal ultrasound may evaluate:

• Testicular masses
• Epididymitis
• Orchitis
• Varicocele
• Hydrocele
• Other scrotal abnormalities

Transrectal Ultrasound

TRUS may examine:

• Prostate
• Seminal vesicles
• Ejaculatory ducts
• Cysts
• Obstruction
• Calcifications

MRI

Prostate or pelvic MRI may be considered for persistent hematospermia, abnormal PSA, concerning examination findings, or suspected seminal tract abnormalities.

Blood in Semen Treatment Options

Observation

When hematospermia occurs once, examination is reassuring, and no concerning symptoms are present, the urologist may recommend observation.

Blood discoloration may gradually clear over several ejaculations.

Antibiotic Treatment

Antibiotics may be prescribed when bacterial prostatitis, UTI, urethritis, or another infection is confirmed or strongly suspected.

Repeated antibiotics are not recommended when testing does not support infection.

STI Treatment

Treatment depends on the specific infection. Recent partners may require testing or treatment, and sexual activity may need to be avoided until care is complete.

Anti-Inflammatory and Symptom Care

The doctor may recommend:

• Appropriate pain medication
• Temporary activity modification
• Hydration guidance
• Treatment for prostate or pelvic inflammation
• Pelvic floor therapy in selected chronic cases

Treatment for Obstruction or Cysts

Persistent symptoms caused by ejaculatory duct obstruction, stones, or cysts may require endoscopic or surgical treatment.

Prostate Treatment

Medication or procedures may be considered when prostate enlargement, inflammation, or another prostate condition contributes to bleeding.

Blood in Semen After Prostate Biopsy

Hematospemia is common after prostate biopsy and may persist longer than blood in the urine.

Patients should contact the biopsy team for:

• High fever or chills
• Inability to urinate
• Heavy or worsening bleeding
• Severe pelvic pain
• Large blood clots
• Significant weakness

Fever after biopsy may indicate a serious infection.

Blood in Semen After Vasectomy

Temporary hematospermia may occur after vasectomy because of tissue irritation or minor bleeding.

Arrange evaluation if it is accompanied by:

• Increasing scrotal swelling
• Severe pain
• Fever
• Pus or wound discharge
• Persistent blood in the urine
• Symptoms that do not improve

Blood in Semen and Fertility

A single episode usually does not indicate infertility. However, evaluation may be helpful when hematospermia occurs with:

• Low semen volume
• Azoospermia
• Abnormal semen analysis
• Painful ejaculation
• Recurrent infection
• Ejaculatory duct obstruction
• Difficulty achieving pregnancy

Treatment should address the underlying reproductive condition.

Blood in Semen for International Patients

Busan offers urology, fertility, and sexual health services for international patients requiring hematospermia evaluation.

Patients should bring:

• Previous PSA results
• Urine, STI, and semen test results
• Prostate or scrotal ultrasound images
• A list of medications
• Information about blood thinners
• Recent procedure records
• Fertility records
• Dates and frequency of symptoms

Patients leaving Korea soon should ask how laboratory and imaging results will be communicated.

How Long Does Evaluation Take?

Urine testing, physical examination, and basic blood tests may often be arranged during the initial visit.

Additional time may be required for:

• Urine or semen cultures
• STI PCR testing
• Ultrasound
• MRI
• Cystoscopy
• Follow-up PSA testing

Treatment duration depends on the underlying cause.

Blood in Semen Treatment Cost in Busan

The total cost may depend on:

• Urology consultation
• Urinalysis and culture
• STI screening
• PSA and blood tests
• Semen analysis or culture
• Scrotal ultrasound
• Prostate ultrasound
• MRI
• Cystoscopy
• Prescription medication
• Follow-up appointments

An individualized estimate can be provided after the necessary tests are determined.

When Should You Seek Urgent Medical Care?

Seek prompt medical attention when blood in semen occurs with:

• High fever or shaking chills
• Inability to urinate
• Significant blood or clots in the urine
• Severe pelvic or testicular pain
• Rapid testicular swelling
• Persistent vomiting
• Dizziness or fainting
• Severe weakness or confusion
• Heavy bleeding after a recent procedure

These signs may indicate severe infection, urinary obstruction, testicular disease, or significant bleeding.

Frequently Asked Questions

Is blood in semen usually serious?

It is often temporary and not caused by a serious condition, but medical evaluation is recommended—particularly when it recurs or occurs with other symptoms.

Can prostatitis cause blood in semen?

Yes. Prostate inflammation or infection can cause hematospermia, pelvic pain, urinary symptoms, and painful ejaculation.

Can an STI cause blood in semen?

Yes. Chlamydia, gonorrhea, Mycoplasma, and other infections may cause inflammation and bleeding.

How long can semen remain discolored after a biopsy?

Blood may remain visible for several weeks after prostate biopsy. Follow the biopsy clinic’s aftercare instructions.

Does hematospermia cause infertility?

Blood alone does not usually cause infertility. The underlying infection, obstruction, or reproductive condition may affect fertility in selected cases.

Can international patients receive evaluation in Busan?

Yes. International patients can receive urine, STI, PSA, semen, ultrasound, MRI, and urology evaluation in Busan.