A trained sonographer or doctor can identify sex from an ultrasound by looking for genital anatomy
The most reliable time is usually the anatomy scan around 18 to 22 weeks
A clear view between the legs is needed for accurate identification
A male fetus may show a protruding penis and scrotum
A female fetus may show the three-line or “hamburger” sign
The baby’s position can block the view
Umbilical cord, legs, or hands can be mistaken for genitalia
Early ultrasounds are less reliable for sex determination
Only a medical professional can confirm the result from the image
If the picture is unclear, ask for a follow-up scan