Abstract
Summary and Conclusions
1. The chemical pregnancy test of Richardson and the rat ovary hyperemia test were run simultaneously on 100 consecutively submitted first morning urine specimens. 2. 81% concordance was found. There were 17.5% false positive chemical tests, 25% false negative. 3. Of the 14 false positive cases, 10 gave clinical evidence of ovarian tumor; 8 of these were confirmed by surgical excision and pathological examination; the other 2 have not been explored. 4. The chemical pregnancy test of Richardson is not sufficiently specific to permit of its general use in the diagnosis pf early pregnancy.
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