[A new, sensitive haemagglutination inhibition test for the specific detection of human choriongonadotropine (HCG) in urine].

The reliability and clinical usefulness of a new pregnancy tube test with a sensitivity of 125 IU HCG/l was tested on 1142 urine samples. No false-negative results and 0.6% false-positive results were observed; a crossreaction with LH was seen above 1400 IU LH/l. In all cases of ectopic pregnancies (n = 49) the test yielded a positive result. In daily urine samples, collected during the luteal phase of the cycle, of 10 women who became pregnant, the test gave a positive result 13.6 days (on the average) after the rise of the basal body temperature. Especially in acute gynaecological emergencies the test is of value, because of its sensitivity and practicability.