Ericsson Method for Gender (Sex) Selection
A pioneer in the gender determination field, Dr. Ronald Ericsson developed and patented the Ericsson Albumin Method of gender selection in the 1970s. The idea behind Ericsson method, a largely still unproven method of gender selection, is that Y-bearing sperm (that would result in a boy) swims faster than X-bearing sperm (that would produce a girl). This technique aims to separate faster-swimming boy-producing sperm from slower-swimming girl-producing sperm.
Specifically, in Ericsson gender selection, sperm is set to swim through a sticky protein liquid (albumin). The assumption is that, in a given period of time, more Y-bearing sperm than X-bearing sperm will swim through the albumin. By repeating this process, a resulting sperm concentrate will contain a relatively high percentage of Y-bearing or X-bearing sperm than the original sample. This concentrated sperm can then be used by a physician or qualified nurse to perform an intrauterine insemination (IUI).
Importantly, however, Ericsson Method is not clinically proven to increase the chances of having the desired gender, and most experts dismiss this method as ineffective. Any other sperm sorting or sperm separation method claimed to be used for gender selection falls into the “sperm spinning” category, and none have been proven effective, except for MicroSort®, which is currently not available for routine clinical use until FDA approval. The only reliable method of gender selection that is currently available is IVF + PGD.