CryoBase Evidence based medicine in reproductive medicine comprises deep temperature cryopreservation in close conjunction to all other features of clinical procedures. Therefore it is not only necessary to be in charge of a sufficient repository system. Moreover a close connection to all other patient’s data has to be established. Therefore WSP contains a completely integrated repository system called CryoBase. The CryoBase consist of a standard repository system in conjunction with a powerful search engine and a within the German version of a system for billing and dunning as well as an automatic alert function (). The interrelation of the repository system with the workflow of WSP start at the level of data acquisition for ejaculates or microsurgery. Both forms are equipped with the appropriate button for the CryoBase. Therefore not only data as used for repository are accessible by the system. All related data to a frozen specimen can be extracted out of the system. Even if a sample has been used for therapeutic interventions, the interrelations are not deleted. This concept allows clinical and scientific data access at any time. Reports and contracts of the CryoBase (n=15) can be created as known from the standard REM. In addition samples for scientific purposes samples can be administrated by that repository system too.