Obstetric Ultrasonography - Fetal Sex Discernment

Fetal Sex Discernment

See also: Prenatal sex discernment

The sex of the fetus may be discerned by ultrasound as early as 11 weeks gestation. The accuracy is relatively imprecise when attempted early. After 13 weeks gestation, a high accuracy of between 99% to 100% is possible if there is no malformed external genitalia.

The following is accuracy data from two hospitals:

Gestational Age King's College Hospital Medical School Taipei City Hospital & Li Shin Hospital
11 weeks 70.3% 71.9%
12 weeks 98.7% 92%
13 weeks 100% 98.3%

Read more about this topic:  Obstetric Ultrasonography

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