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Sperm Collection by Electroejaculation (EEJ)

This information will help you prepare for your sperm collection by electroejaculation (EEJ) at Memorial Sloan Kettering (MSK).

EEJ is a procedure to collect sperm for analysis, freezing, and storage. It is for men who are not able to collect sperm by masturbating to ejaculation. During the procedure, a mild electric current is used to cause an ejaculation while you are asleep.

After your procedure, your semen will be brought to the Sperm Bank of New York, where it will be analyzed. After it is analyzed, it will be transferred to their affiliated New Jersey sperm bank for freezing and storage. The address of the sperm bank:

The Sperm and Embryo Bank of New Jersey
187 Mill Lane
Mountainside, NJ 07092


Some sperm banks may offer less expensive storage fees. Speak with your healthcare provider if you are interested in having your sperm moved to a different sperm bank or if you have any other questions.

Before Your Procedure

Ask about your medications

You may need to stop taking some of your medications before your procedure. Talk with your doctor about which medications are safe for you.

Arrange for someone to take you home

You must have someone 18 years or older take you home after your procedure. If you don’t have anyone, call one of the agencies below. They will provide someone to accompany you home, however there is usually a charge for this service and you will also need to provide transportation.

In New York:
     Partners in Care: 888-735-8913
     Prime Care: 212-944-0244
In New York or New Jersey:

     Caring People: 877-227-4649


Tell us if you’re sick

If you develop any illness (fever, cold, sore throat, or flu) before your procedure, please call the doctor who scheduled it for you. After 5:00 pm, during the weekend, and on holidays, call 212-639-2000 and ask for the doctor on call for your doctor.

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The Day Before Your Procedure

Note the time of your appointment

A clerk from the Admitting Office will call you after 2:00 pm the day before your procedure. He or she will tell you what time you should arrive at the hospital for your procedure. If you are scheduled for your procedure on a Monday, you will be called on the Friday before. If you do not receive a call by 7:00 pm, please call 212-639-5014.

If you need to cancel your procedure for any reason, please call the doctor who scheduled it for you.

Instructions for eating and drinking before your procedure

12 ounces of water

  • Do not eat anything after midnight the night before your procedure. This includes hard candy and gum.
  • Between midnight and up until 2 hours before your scheduled arrival time, you may drink a total of 12 ounces of water (see figure).
  • Starting 2 hours before your scheduled arrival time, do not eat or drink anything. This includes water.
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The Day of Your Procedure

Things to remember

  • Take your medications the morning of your procedure as instructed by your doctor. Take them with a few sips of water.
  • Do not put on any lotions, creams, powders, deodorant, makeup, or perfumes.
  • Remove any jewelry, including body piercings.
  • Leave all valuables, such as credit cards and jewelry, at home.
  • If you wear contact lenses, if possible, wear your glasses instead. If you don’t have glasses, bring a case for your contacts.

What to bring with you

  • A list of the medications you take at home, including patches and creams
  • Medications for breathing problems (such as inhalers), medications for chest pain, or both
  • A case for your glasses or contacts
  • Your Health Care Proxy form, if you have completed one

Where to park

Parking at MSK is available in the garage on East 66th Street between York and First Avenues. To reach the garage, turn onto East 66th Street from York Avenue. The garage is located about a quarter of a block in from York Avenue, on the right-hand (north) side of the street. There is a pedestrian tunnel that you can walk through that connects the garage to the hospital. If you have questions about prices, call 212-639-2338.

There are also other garages located on East 69th Street between First and Second Avenues, East 67th Street between York and First Avenues, and East 65th Street between First and Second Avenues.

Where to go

Please arrive at the main building of MSK at 1275 York Avenue between East 67th and East 68th Streets. Take the M elevator to the 2nd floor. Enter through the glass doors and check in at the desk.

What to expect

Once you arrive at the hospital, doctors, nurses, and other staff members will ask you to state and spell your name and date of birth many times. This is for your safety. People with the same or similar names may be having procedures on the same day.

You will receive general anesthesia to put you to sleep during the procedure. A catheter (thin, flexible tube) will be placed in your bladder to drain out your urine. A solution will be put into your bladder through the catheter to lower the acid level. This protects any sperm that may pass into your bladder when you ejaculate.

While you are asleep, your doctor will place a probe into your rectum. A mild electrical current will be delivered through the probe. This is repeated every few seconds and slowly increased until you ejaculate.

All of your semen will be collected. This includes the semen from your penis and any that may have passed into your bladder. The semen will be analyzed under a microscope. If no sperm are found or if the sperm do not move well, another procedure called testicular sperm extraction (TESE) may be performed. This involves collecting the sperm directly from the testes. This will only be done if you consented to it before your procedure.

Once the semen has been collected, the probe and catheter will be removed.

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After Your Procedure

In the recovery room

You will be taken to the Post Anesthesia Care Unit (PACU) after your procedure. You will be there until you wake up, and then you will be discharged home with your caregiver.

At home

  • If you are having pain, you can take medications such as ibuprofen (Advil®) or acetaminophen (Tylenol®).
  • You may have mild discomfort and burning with urination for 3 days after your procedure. If this lasts longer than 3 days or gets worse, you may have a urinary tract infection (UTI). To prevent this:
    • You will be given a prescription for antibiotics. Take them for 3 days after your procedure. Take all the medication that is prescribed.
    • Drink extra liquids for 3 days after your procedure. Drink enough so that your urine is almost clear.
  • You will receive your results within 3 days of your procedure. If you have not received your results after 3 days, call your doctor.
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Call Your Doctor or Nurse if You Have:

  • Burning with urination that lasts longer than 3 days or gets worse
  • Frequent or urgent urination
  • An inability to urinate
  • Blood in your urine or from your rectum
  • A temperature of 101°F (38.3°C) or higher
  • Chills
  • Pain that is not relieved with ibuprofen or acetaminophen
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