[Recovery of preovulatory human oocytes (author's transl)].

Rapid radio-immune assaying of LH was carried out four times daily on 52 women in the preovulatory phase of the cycle. This method enables the precise detection of the LH surge and recovery of the mature oocyte by laparoscopic aspiration of the follicular content, just before ovulation, which is between 28 and 36 hours after the start of the LH surge. The oocytes was recovered in 27 out of 41 patients with a normal cycle (66%). The rate of recovery per follicle aspirated is comparable in a natural cycle to that after treatment with Clomid (80 to 84%).