Genetic testing for heritable diseases

JScreen is a genetic testing service associated with Emory University that allows individuals and couples to learn what heritable diseases they may carry.  It also offers advising on Preimplantation genetic diagnosis (PGD), Use of donor sperm or egg, Adoption, Prenatal Diagnosis, and Preparation and Early Treatment (when expecting a child who may have a congenital disease).

A well established service of this kind, with a focus on Tay Sachs disease, is Dor Yeshorim (which translates roughly as "straight generation") about which I blogged last year with particular attention to the privacy protecting part of their protocol:

A privacy-preserving market design intervention to avoid Tay Sachs disease