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EMBED PowerPoint.Slide.8 EMBED PowerPoint.Slide.8 EMBED PowerPoint.Slide.8 EMBED PowerPoint.Slide.8 EMBED PowerPoint.Slide.8 EMBED PowerPoint.Slide.8 EMBED PowerPoint.Slide.8 EMBED PowerPoint.Slide.8 EMBED PowerPoint.Slide.8 EMBED PowerPoint.Slide.8 EMBED PowerPoint.Slide.8 EMBED PowerPoint.Slide.8 EMBED PowerPoint.Slide.8 EMBED PowerPoint.Slide.8 EMBED PowerPoint.Slide.8 EMBED PowerPoint.Slide.8 EMBED PowerPoint.Slide.8 EMBED PowerPoint.Slide.8 EMBED PowerPoint.Slide.8 EMBED PowerPoint.Slide.8 EMBED PowerPoint.Slide.8 EMBED PowerPoint.Slide.8 EMBED PowerPoint.Slide.8 EMBED PowerPoint.Slide.8 EMBED PowerPoint.Slide.8 EMBED PowerPoint.Slide.8 EMBED PowerPoint.Slide.8 EMBED PowerPoint.Slide.8 EMBED PowerPoint.Slide.8Secondary, or adult-onset, amenorrhea is present when a woman who had been menstruating has no menses for longer than three of her previous cycles, or 6 months. Determining the cause of secondary amenorrhea starts with measuring serum levels of human chorionic gonadotropin (hCG), prolactin, FSH, and testosterone and calculating the body mass index (BMI).
The most common cause of secondary amenorrhea is pregnancy. Pregnancy is best diagnosed by measuring the serum or urine hCG level. The hCG pregnancy test is one of the most accurate in medicine, with a sensitivity and specificity exceeding 99%.