<unk>  refers to the extraction of fluid from the rectouterine pouch posterior to the vagina. It can be one diagnostic used in identifying ectopic pregnancy.
The Rectouterine Pouch is often reached through the posterior fornix of the vagina. The process of creating the hole is sometimes called "colpotomy".
Culdocentesis
Hysterosalpingography
Steri strip
Cytomics
Cytogenetics
Hysteroscopy
Genogram
Dilation and curettage