This paper presents the results of a detailed study of the genetic prenatal diagnostic services available in Canada in 1990. All 22 genetic centres offering prenatal diagnostic services as well as the 64 laboratories processing samples were surveyed. Data were collected from each to determine what testing was being done, how many women were being tested, for what conditions, and with what outcomes. Also, data on the 35 formal outreach sites were collected. The statistics presented are for the 1990 calendar year. This survey was conducted for the Canadian Royal Commission on New Reproductive Technologies.