Abstract
This test (Prepuerin) when performed as described as a qualitative test for chorionic gonadotropin was uniformly negative or 100 per cent accurate on urines from 333 patients with 12 weeks or less of amenorrhea who were not pregnant. With urine from 537 similar patients who were pregnant the accuracy increased from 50 per ceni correct on urine front patients 5 weeks (29-35 days) to 85 then 95, 98, 99, 100, 100, and 100 per cent in the sixth through the twelfth week from the first day of their last menstrual period. On urine from patients with gynecologic complaints and who might be pregnant, the test was 97 per cent accurate over-all being truly positive in 120 of 121 positive tests and truly negative in 159 of 166 negative tests.
Published Version
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