The Ericsson Method

molecular biology. small plastick tube in tube rackGender selection has been more prevalent in the media lately, but men and women have been using various methods to try and tip the odds to a certain gender for a long time. In the medieval times, many men would even tie off or cut off one testicle because girl sperm and boy sperm were believed to come from separate testicles. One of the methods used is the Ericsson Method.

Where did the Ericsson Method originate from?
Dr. Ronald Ericsson developed the Albumin Method, commonly called the Ericsson Method, in the 1970’s while doing research in Berlin. Dr. Ericsson patented his method and started the company Gametrics Limited in 1975. Gametrics Limited has centers in California, Florida, Maine, Michigan, New Jersey, and New York.

How does the Ericsson Method work?
Centers that use the Ericsson Method take a sperm sample from the male and suspend it in a solution. The solution is then put into a centrifuge and spun to separate the male from the female sperm in layers. Male sperm are slightly lighter than female sperm (about a 3 percent difference in amount of DNA.) The sperm that carries the preferred chromosome (X for female and Y for male) is then inserted into the women through IUI or into an egg via IVF.

What is the success rate?
The rate of success is not 100 percent because the sperm that is remaining after spinning is not 100 percent female or male chromosome bearing. According to the Gametrics website, their success rate is 78-85 percent in couples seeking a boy, and 73-75 percent for girls. However, according to some researchers and experts, sperm spinning did not truly elevate the success for gender selection.

What are the risks?
While there may not be “real” risks to sperm spinning, experts warn that parents should not place all of their hopes on an unproven science. Parents should research their fertility clinic, as the solution used to suspend the sperm may not be regulated. Sperm spinning or sorting is regulated heavily in the UK and is not typically allowed, except for in cases where a certain gender may carry genetic diseases.

Check with your local fertility doctor about the Ericsson method, and check the licenses, as well as the ratings and reputation, of any center you choose for gender selection.

What do you think?

The Ericsson Method

Tell us what you think!


  1. Profile photo of lucy lucy says:

    Read ‘Swaying’ by Lucinda Blanchard on Amazon. It’s a fictional account of two woman who really want a daughter and try lots of crazy methods to sway the odds, including spinning the sample like the above method.

  2. Profile photo of kirsten kirsten says:

    It says it’s not 100% accurate.It’s kinda scary too.

  3. Profile photo of mommy nhoj mommy nhoj says:

    Technicality! I thought he’s Erikson the psychologist. I just noticed the difference in the spelling!

  4. Profile photo of TaKeisha TaKeisha says:

    I never knew the medieval men tied up or cut off a testicle! This site is a good learning tool packed with information!

  5. This is a really cool article! I did not know this! It is great to know.

  6. Profile photo of Marilyn Marilyn says:

    Never heard of it. 😛


Get a FREE Newborn Sleep Guide when you sign up for our newsletter

By joining the community, you will have access to our active community of mothers just like you, interactive tools, sweepstakes, free baby offers and more! You will also receive customized newsletters tailored specifically to you and special offers directly in your inbox.By joining the community, you will have access to our active community of mothers, interactive tools, sweepstakes, free baby offers, customized email newsletters tailored specifically to you and special offers directly in your inbox.

Due Date or Baby's Birth Date

By clicking the "Join Now" button you are agreeing to the terms of use and privacy policy.

Send this to a friend