False pregnancy tests caused by semen contamination of urine.
D005188:False Negative Reactions; D005189:False Positive Reactions; D005260:Female; D006801:Humans; D011247:Pregnancy; D011259:Pregnancy Tests, Immunologic / Q000295:instrumentation / Q000592:standards*; D012661:Semen / Q000032:analysis / Q000276:immunology*; D014556:Urine / Q000032:analysis*