A sperm bank , semen bank or cryobank is a facility or enterprise which purchases, stores and sells human semen. The semen is produced and sold by men who are known as sperm donors. The sperm is purchased by or for women for the purpose of achieving a pregnancy or pregnancies other than by a sexual partner. Sperm sold by a sperm donor is known as donor sperm.
Sperm donation is a procedure in which a man donates semen — the fluid containing sperm that is released during ejaculation — to help an individual or a couple conceive a baby. Donated sperm can be injected into a woman's reproductive organs intrauterine insemination or used to fertilize mature eggs in a lab in vitro fertilization. The use of donated sperm is known as third-party reproduction. A man who makes a sperm donation can be known or anonymous to the recipient. Sperm donations made to a known recipient are called directed donations. Before you can donate sperm, you must be screened for medical conditions and other risk factors.