[Measurement of LH in urine by HI-gonavis test for the predetermination of ovulation (author's transl)].

The immunological LH/HCG test HI-Gonavis was used to measure the LH-excretion in urine of 30 patients during 1 to 3 cycles. The level of LH in plasma was determined simultaneously by radioimmunoassay. 12,5IU LH/L urine, the limit of sensitivity of HI-Gonavis, coincide with 7,2 mIU/ml plasma. 50 or 100 IU LH/L urine were found in patients showing a LH plasma level which was higher than 12,5 mIU/ml. In the ovulatory cycle this value is reached 1 day before the LH-peak. From the correlation of the preovulatory increase of LH in the plasma and the LH-excretion in the urine it can be concluded, that the detection of 50 IU LH/L urine indicates the ovulation within the next 12--30 hours. The practicability of this test for the predetermination of ovulation is demonstrated by examples.