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Las pruebas de embarazo en orina sólo serán positivas cuando usted tenga suficiente GCH en la sangre. Si usted apenas está comenzando el embarazo y el nivel de GCH está por debajo de 25-50 mlU/mL, la prueba será negativa.
Si cree que está embarazada, repita la prueba de embarazo en casa o en el consultorio médico.
Webster RA. Reproductive function and pregnancy. In: McPherson RA, Pincus MR, eds. Henry's Clinical Diagnosis and Management by Laboratory Methods. 21st ed. Philadelphia, Pa: Saunders Elsevier; 2006:chap 25.
Morrison LJ. General approach to the pregnant patient. In: Marx JA, Hockberger RS, Walls RM, et al, eds. Rosen’s Emergency Medicine: Concepts and Clinical Practice. 7th ed. Philadelphia, Pa: Mosby Elsevier; 2009:chap 175.
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