[The value of donor sperm in intra-cytoplasmic sperm injections? The French Centers for Semen Preservation policy].

Some IVF laboratories ask for donor's semen during an ICS attempt if retrieval of husband's sperm is unsuccessful. The French Centers for Semen preservation (CECOS) consider that this request is not acceptable for legal, psychological and ethical considerations. Legal consent may not be ambiguous. The psychological lost of biological fatherhood should be totally assumed before undertaking conception with donor's semen. ICSI should be started only if it is most likely to succeed. For all these reasons, CECOS refuse to modify the strategy of procreatione during the course of an attempt.