Peritoneal fluid 6-keto prostaglandin F1 alpha levels in women with endometriosis.

Peritoneal fluid was collected from women undergoing investigations for infertility at laparoscopy performed during the luteal phase. The volume of fluid was recorded and concentrations of 6-keto prostaglandin F1 alpha were determined by radioimmunoassay. No difference was found in either the total amount or the concentration of 6-keto prostaglandin F1 alpha in the women with or without endometriosis. Furthermore, there was no difference in the volume of peritoneal fluid between these two groups of women. We conclude that 6-keto prostaglandin F1 alpha in peritoneal fluid is not associated with macroscopically visible endometriosis.