Collection and preparation of the sperm

The collection of semen is performed in the laboratory the same day as the collection of oocytes by follicular punctureOocyte retrieval in ovarian follicles in women for in vitro fertilization. The vaginal oocyte retrieval is generally performed under a light general anesthesia, and is carried out by puncturing each mature follicle under ultrasound guidance. (oocyteA female reproductive cell. At birth, the ovaries contain 1 to 2 million oocytes. At puberty, there are no more than 400'000 to 500'000 left. Only 400 to 500 will reach maturity and ovulation at a rate of  one per month until menopause. All the others will finally degenerate at various stages of development. pick-up). A sexual abstinence of 2-5 days is recommended, as this period allows for a maximum of motile spermEjaculated spermatozoa and secretions during the male orgasm.. It is possible that the physician proposes to reduce the duration of abstinence. In cases where an ejaculation by masturbation is not possible, the collection of spermEjaculated spermatozoa and secretions during the male orgasm. during coitus is possible, but it must carried out in a special nontoxic condom provided by the laboratory. This possibility, like a collection at home, should be discussed beforehand with the doctor and the laboratory.

In very rare cases, when the first sample contains no or too few spermEjaculated spermatozoa and secretions during the male orgasm., a second ejaculateSeminal liquid, sperm. may be required.