Vasectomy
A vasectomy is a short office procedure that cuts and seals the two tubes that carry sperm, so your semen no longer contains sperm. It is permanent birth control for men.
Also called No-scalpel vasectomy, NSV, Male sterilization, Permanent birth control for men, The snip, Getting snipped, Snip, Vas deferens ligation
- Where
- Clinic procedure room (sometimes an outpatient surgery center)
- Anesthesia
- Local numbing medicine; some offices also offer a calming pill
- Time in the room
- 15 to 30 minutes
- Hospital stay
- Same day; you go home right after
- Back to normal
- 2 to 7 days
- Back to work
- Desk work in 1 to 2 days; heavy physical work in about a week
Overview
Sperm are made in the testicles and travel up toward the penis through two thin tubes, one on each side, called the vas deferens (or vas). A vasectomy closes both tubes. You still make semen, still ejaculate, and still have the same erections and orgasms. The difference is that the fluid no longer carries sperm.
Most vasectomies in the United States are done with the no-scalpel method. Your urologist numbs the skin, makes one tiny opening in the front of the scrotum (the pouch of skin that holds the testicles), lifts each tube out, and seals it. There are usually no stitches. The whole thing takes 15 to 30 minutes, and about half a million men in the United States have one each year.
A vasectomy does not work right away. Sperm are already stored in the tubes beyond the cut, and it takes weeks to clear them. You will need a semen test, usually 8 to 16 weeks after the procedure, and you must keep using another form of birth control until your urologist tells you the test shows you are clear.
A vasectomy is meant to be permanent. It can sometimes be undone with a longer microsurgery, but that costs more, is often not covered by insurance, and does not always work. If there is any chance you will want children later, talk about that openly before you decide, and ask about freezing sperm first.
The parts of your body involved
Each testicle sits in the scrotum. Sperm made in the testicle move into the epididymis, a coiled tube on the back of the testicle where they mature. From there they enter the vas deferens, a firm tube about the thickness of a cooked spaghetti noodle that runs up inside the spermatic cord, past the groin, and into the pelvis. Near the prostate, sperm mix with fluid from the seminal vesicles and prostate to make semen. Sperm are only a few percent of the volume of semen, which is why semen looks and feels the same after a vasectomy. The vas can be felt through the skin of the upper scrotum, and that is where your urologist closes it.
- Testicles
Two oval glands in the scrotum that make sperm and the hormone testosterone. A vasectomy does not touch them.
- Epididymis
A soft, coiled tube on the back of each testicle where sperm mature and are stored.
- Vas deferens
The tube that carries sperm from the epididymis up toward the prostate. This is the tube that is cut and sealed.
- Spermatic cord
The bundle that holds each testicle up. It contains the vas, the blood vessels and the nerves of the testicle.
- Scrotum
The pouch of skin that holds the testicles. The tiny opening for a vasectomy is made in its front, upper part.
- Seminal vesicles and prostate
Glands deep in the pelvis that make most of the fluid in semen. They keep working normally after a vasectomy.
Why it’s done
People choose vasectomy when they are sure they do not want to cause a pregnancy in the future. It is one of the most effective forms of birth control there is, and it is simpler and safer than tubal sterilization for a female partner.
- You are sure your family is complete
Many couples choose vasectomy after they have the number of children they want, or when they decide not to have children at all.
- It is highly effective
Once a semen test shows you are clear, the chance of a pregnancy is about 1 in 2,000. That is lower than most other methods.
- It is simpler than female sterilization
A vasectomy is done awake in an office with local numbing. Tubal sterilization usually needs general anesthesia and entering the belly.
- Nothing to remember
There are no pills, devices or hormones. Once you are cleared, there is nothing more to do.
- A partner's health
Sometimes pregnancy would be risky for a partner, or a partner cannot use hormonal birth control.
Other options
- Condoms
Easy to get and they also protect against sexually transmitted infections. They are less reliable with typical use than a vasectomy.
- A partner's long-acting birth control
An IUD (a small device placed in the uterus) or an arm implant works for years and can be removed if plans change. These are about as effective as sterilization.
- Tubal sterilization for a female partner
Closing or removing the fallopian tubes is also permanent. It is usually done under general anesthesia with keyhole surgery, so it carries more risk than a vasectomy.
- Other methods
Pills, patches, rings, shots and withdrawal are options. They rely on regular use and fail more often than a vasectomy.
- Waiting
If you or your partner are not sure, it is reasonable to wait. A vasectomy is best when the decision feels settled.
Getting ready
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At your consultation
The week before
The day before and the morning of
The procedure, step by step
Press play or pick a step. Each drawing shows what your surgeon is doing at that moment. Your team may do some steps differently.
1. Getting settled
You lie on your back on a procedure table. The nurse cleans the scrotum with an antiseptic that feels cold, and covers the rest of you with a sterile drape. Your urologist then feels for the first vas and holds it just under the skin with the fingers.
After the procedure
Right afterward
- A short rest
You stay on the table or in a chair for a few minutes so the team can check that there is no bleeding.
- Getting home
If you took a calming pill, someone else must drive. Sitting with a cold pack on the way home helps.
- Your semen test kit
Most offices give you instructions and a container for the semen test before you leave. Put the date on your calendar.
- Your first ice
Start ice once you are home: 20 minutes on, 20 minutes off, with a thin cloth between the ice and your skin.
At home
- Pain
Expect a dull ache in the scrotum and sometimes the groin for 2 to 3 days. Acetaminophen usually controls it. Your office will tell you when ibuprofen is fine to use. Strong prescription pain medicine is rarely needed.
- Ice and support
Use ice on and off for the first 24 to 48 hours, and wear snug supportive underwear day and night for about a week.
- The puncture site
A spot of blood on the gauze is normal for the first day. Keep the area clean and dry. The tiny opening usually seals within a day or two.
- Showering
Most offices allow a shower the next day. Pat the area dry. Avoid baths, hot tubs and swimming for about a week.
- Activity
Rest with your feet up for the first day or two. Walking around the house is fine. Avoid long periods on your feet at first.
- Lifting and exercise
Avoid heavy lifting (more than about 20 pounds), running, cycling and hard workouts for about a week. Your urologist may give a slightly different limit.
- Sex and ejaculation
Most men can have sex or ejaculate after about a week, once it is comfortable. Ejaculating regularly helps clear the stored sperm. Use other birth control every time until you are told you are clear.
- Work
Desk work in 1 to 2 days. Jobs with heavy lifting or a lot of standing may need about a week.
- The semen test
Usually 8 to 16 weeks after the procedure, you give a semen sample. It is checked under a microscope for sperm. Your urologist tells you the result and whether you can stop other birth control.
Recovery timeline
- Day 0Home within the hour
You go home, ice the area and rest with your feet up. The numbing wears off over a few hours and a dull ache sets in.
- Days 1 to 2Taking it easy
Soreness and mild swelling are at their peak. Most men are moving around the house and some return to desk work.
- Days 3 to 7Back to routine
The ache fades. Most men are back at work and doing light activity. Small bruises can show up and then fade.
- About 1 weekExercise and sex
Most men can return to workouts, lifting and sex. Keep using other birth control.
- Weeks 1 to 4Small lumps
A small, slightly tender lump can form at the cut ends as they heal. This is common and usually settles on its own.
- Weeks 8 to 16Semen test
You give a semen sample. If it shows no sperm, or only a very small number of sperm that cannot move, you are cleared.
- After clearanceStop other birth control
Once your urologist confirms the result in writing or by phone, you can stop other birth control. If sperm are still seen, the test is repeated.
- Long termNothing to maintain
There are no follow-up visits unless you have a problem. The vasectomy keeps working for the rest of your life in nearly all men.
What it feels like
Most men say the worry before the vasectomy was worse than the procedure. It is quick, you are awake, and the main feelings are a brief sting, some tugging and a dull ache afterward. Here is what it is usually like.
The days before
It is normal to feel nervous, and many men feel awkward about shaving or about strangers handling their genitals. Some have a moment of doubt about the permanence.
What helpsWrite down your questions and ask them at the visit. If the doubt is real, it is fine to wait. The staff do this many times a week and keep things professional.
On the table
The antiseptic is cold. Lying exposed under a drape can feel embarrassing for a minute or two.
What helpsMany offices let you listen to music or talk with the team. Slow breathing helps you stay relaxed, which also makes the vas easier to find.
The numbing
A sharp sting, then a few seconds of burning as the medicine goes in. This is usually the most uncomfortable part.
What helpsBreathe out slowly as the needle goes in. Tell your urologist if anything feels sharp after the numbing; more medicine can be given.
When the tube is handled
You may feel tugging and a deep, dull ache in the groin or lower belly, a bit like the start of being hit in the testicles. Some men notice a faint burning smell from the cautery.
What helpsIt passes in seconds. Let your urologist know, and keep breathing slowly. Some men feel lightheaded; lying still for a few minutes afterward helps.
The first evening
As the numbing wears off, a dull, heavy ache sets in. Sitting up straight can be uncomfortable.
What helpsIce, supportive underwear, acetaminophen and a couch. A bag of frozen peas fits well.
The first ejaculation
It may ache a little, and the semen can have some brown or pink streaks for the first few times. This is old blood and is common.
What helpsWait until you feel ready, usually about a week. If it hurts a lot, give it a few more days.
Waiting for the semen test
Weeks of using condoms or other birth control can feel tiresome, and collecting the sample can feel awkward.
What helpsMark the test date on your calendar early. Ask whether your office uses a mail-in kit or a lab drop-off and what the time limit is to get the sample in.
Getting the all-clear
Most men and their partners feel real relief.
What helpsSave the result. If you ever have a question about a pregnancy, your urologist can repeat the test.
How well it works
Success means the semen no longer contains moving sperm. This is checked with a semen test, not assumed.
- How you are cleared
One semen sample, usually 8 to 16 weeks after the procedure, that shows no sperm at all, or only a very small number of sperm that cannot move (100,000 or fewer per milliliter), means you can stop other birth control.
- If sperm are still seen
The test is repeated in a few weeks. Persistent moving sperm 6 months after the vasectomy usually means the procedure needs to be repeated. This happens in fewer than 1 in 100 men.
- Long-term reliability
After you are cleared, the chance of a pregnancy is about 1 in 2,000. The tubes can, very rarely, find their way back together years later.
- No other changes
Testosterone, sex drive, erections, orgasm and the look and amount of semen stay the same.
Risks
Every operation has risks. These are the ones people ask about most, with honest odds where good numbers exist. Your surgeon’s own results matter more than averages.
Common
A dull ache for a few days is expected. It is usually controlled with acetaminophen, ice and support.
Some swelling and purple bruising around the scrotum or base of the penis is common and fades within 1 to 2 weeks.
Pink or brown semen for the first few ejaculations is common and harmless.
Less common
A collection of blood can make the scrotum swollen, firm and painful. Most settle with rest, ice and support. A large one occasionally needs a procedure to drain it.
Redness, warmth or pus at the puncture site, sometimes with fever. It is usually treated with antibiotics.
A small, sometimes tender lump where sperm leak from the cut end and the body walls them off. Most are painless and need no treatment.
A feeling of fullness or ache near the epididymis for weeks, from sperm backing up. It usually settles with time and anti-inflammatory medicine.
Rare
Some men have pain that lasts months and interferes with daily life. Most improve with medicines, nerve blocks or time. A small number need further surgery, which may include vasectomy reversal.
Moving sperm still present months later because the tube has reconnected. The vasectomy is repeated.
A pregnancy after a semen test showed you were clear. It happens because the tube rejoins on its own, sometimes years later.
Call your care team or go to the emergency room if
- Fever of 101°F (38.3°C) or higher, or shaking chills
- Swelling in the scrotum that keeps growing over a few hours, or a firm, tense swelling bigger than a golf ball
- Bleeding that soaks through the gauze and does not stop after 10 minutes of steady, firm pressure
- Redness spreading across the scrotum, warmth, or pus from the puncture site
- Pain that gets worse after the second day, or is not eased by your pain medicine
- Your partner misses a period or has a positive pregnancy test at any time after your vasectomy
Questions to ask your surgeon
- Do you use the no-scalpel method, and how do you seal the ends of the tubes?
- How many vasectomies do you do in a typical month?
- Can I have a calming pill, or do it with sedation, if I am very anxious?
- Should I stop aspirin or any of my other medicines beforehand?
- Do I need to shave, or will your team do it?
- When exactly should I do the semen test, and how do I drop off or mail the sample?
- What result means I can stop using other birth control?
- How long should I avoid lifting, exercise and sex?
- What should I do if the scrotum swells a lot after I get home?
- How often do your patients have long-lasting pain afterward?
- If I want to freeze sperm first, where can I do that and what does it cost?
- What does it cost, and does my insurance cover it?
Words you may hear
- Vas deferens
- The tube on each side that carries sperm from the testicle up to where semen is made. Often just called the vas.
- Epididymis
- A coiled tube on the back of each testicle where sperm mature and are stored.
- Scrotum
- The pouch of skin that holds the testicles.
- Spermatic cord
- The bundle of vas, blood vessels and nerves that holds each testicle up.
- No-scalpel vasectomy
- A vasectomy done through one tiny opening made with a pointed instrument instead of a blade, usually with no stitches.
- Local anesthetic
- Numbing medicine injected into the skin and tissues so you feel little pain while awake.
- Cautery
- A small heated tip used to seal tissue and stop bleeding.
- Fascial interposition
- Closing a thin layer of tissue over one cut end so the two ends of the vas sit in separate layers and are less likely to rejoin.
- Semen analysis
- A lab test that checks a semen sample under a microscope for sperm.
- Post-vasectomy semen analysis
- The semen test done weeks after a vasectomy to confirm it has worked.
- Azoospermia
- No sperm at all in the semen.
- Hematoma
- A collection of blood under the skin that causes swelling and bruising.
- Sperm granuloma
- A small lump that forms where sperm leak from the cut end of the vas.
- Recanalization
- When the two cut ends of the vas find their way back together, letting sperm through again.
Common questions
Will a vasectomy change my sex life?
No. Erections, sex drive, orgasm and the feel and amount of semen stay the same. Some couples say sex feels more relaxed once pregnancy is no longer a worry.
Will it lower my testosterone?
No. Testosterone is made in the testicles and travels in the blood, not through the vas. A vasectomy does not change it.
How soon can I stop other birth control?
Only after your urologist tells you your semen test shows you are clear. That is usually 8 to 16 weeks after the procedure. Many unplanned pregnancies after vasectomy happen because a couple stopped birth control too early or skipped the test.
Where does the sperm go?
Your testicles keep making sperm. Because they cannot get out, the body breaks them down and absorbs them, the same way it handles any sperm that are not ejaculated.
Does a vasectomy raise the risk of prostate cancer, heart disease or other illnesses?
The American Urological Association reviewed the research and found that vasectomy is not a risk factor for prostate cancer, testicular cancer, heart disease, stroke, high blood pressure or dementia.
Can it be reversed?
Often, yes, with a microsurgery called vasectomy reversal. Success is best within the first several years and falls the longer it has been. Reversal is usually not covered by insurance, so it is best to treat a vasectomy as permanent.
Does it hurt?
The numbing injection stings for several seconds, and you may feel tugging and a dull ache during the procedure. Afterward most men need only ice and acetaminophen for 2 to 3 days.
Does it protect against sexually transmitted infections?
No. A vasectomy only prevents pregnancy. Use condoms if you are at risk of infections.
Sources this page draws on
- American Urological Association, Vasectomy: AUA Guideline (amended 2015) (2012)
- Urology Care Foundation, Vasectomy
- MedlinePlus (U.S. National Library of Medicine), Vasectomy
- American College of Obstetricians and Gynecologists, Sterilization for Women and Men (patient FAQ)
Written November 2026. This page explains what usually happens. It is not medical advice and does not replace a conversation with your own surgeon, whose plan for you comes first.