Reconsidering the number of offspring per gamete donor in the Dutch open-identity system.

The introduction of legislation in the Netherlands in 2004 enabling donor offspring to identify and make contact with their donors has led to a need to reconsider the number of offspring that an individual semen donor may produce. To this end, we made a survey on the limits for offspring per donor in 29 different countries, distinguishing between systems with anonymous and open-identity sperm donation. We counted donations as individual offspring conceived, or as the number of women/families helped, by a single donor. The interests of the various participants in gamete donation in open-identity and anonymous systems are considered with some of the basic assumptions and interactions between the different parties that might be used to formulate reasonable guidelines. A number of recommendations are made.