Frozen donor sperm can be purchased from commercial cryobanks and shipped to our laboratory in Washington, D.C. for storage. The cryobanks provide catalogs of donors from which patients can make their choices based on a number of characteristics (eye color, hair color, height, weight, complexion, etc). The donors are thoroughly screened for genetic diseases and familial disorders and all frozen sperm samples must be quarantined for at least six months to allow for testing or the donor for infectious diseases.