"Tandem" urine pregnancy test evaluated.
D006063:Chorionic Gonadotropin / Q000097:blood / Q000652:urine*; D005260:Female; D006801:Humans; D007124:Immunoenzyme Techniques; D011247:Pregnancy; D011258:Pregnancy Tests; D011863:Radioimmunoassay
D006063:Chorionic Gonadotropin