An early pregnancy test

ABSTRACT

A rapid agglutination – inhibition test was realized with hCG-coated sheep erythrocytes and rabbit antibodies to hCG. Determined amount of hCG on the red blood cells and titrated concentration of antibodies allowed the test to be sensitive at 200 UI/l for confirmation of pregnancy at 2-3 weeks (0-5 days following the first missed period). 3.000 tests were implemented in Nha Trang Pasteur Institute and Hanoi Newborn & Mother Protection Hospital showed that confident rate was 99%. The test was then used for diagnosing the urines of women just before their abortion. The results indicated that more than 11% of these women, at less than 15 days following the first their abortion, were not pregnant and should avoid abortion.