[Radio-immunological testing of progesterone for diagnosis of corpus luteum insufficiency (author's transl)].

Radio-immunological assay was used to determine progesterone concentrations in serum during the luteal phase in 34 patients with treated and untreated corpus luteum insufficiency. Twenty patients with normal menstruation cycles were used as controls. Progesterone levels were found to be in agreement with the histological pattern of the endometrium. Progesterone values obtained from serial radio-immunological assay thus are high-accuracy criteria for diagnosis and therapeutic monitoring of corpus luteum insufficiency.