[Recent studies into conductivity of oviduct (author's transl)]

A modern functional test of tubal activity is based on the fundamental activity of the oviduct. A glass pessary is applied to the portio, before iodine-containing contrast medium is injected into the Douglas pouch. The blue colour of genital secretion which accumulates in the pessary during iodine-starch reaction will indicate not only tubal patency but also conform tubal function. The functional test is easy to perform and does not imply any risk to the patient. It can thus be carried out in any hospital, but iodine allergy of the patient concerned should be ruled out beforehand.