What is the normal biparietal diameter of a girl?

Patient's question:

I am currently four months pregnant. I went to the hospital for a thorough examination, and the doctor said the baby's biparietal diameter is a bit small. My friend told me that a small biparietal diameter indicates a girl. What is the average biparietal diameter for a four-month-old girl?
What kind of help I need: What is the average biparietal diameter for a girl?

Doctor's answer:

The biparietal diameter of a girl is usually much smaller. According to your description, a biparietal diameter of 4.1 cm at 4 months is normal. It is not possible to predict the gender based solely on the biparietal diameter value; a detailed ultrasound examination is necessary for more accurate results. Additionally, it is currently illegal to determine the gender of the baby, so many large hospitals will not tell you the child's gender. During pregnancy, regular prenatal check-ups are recommended. The above advice is for the question "What is the average biparietal diameter of a girl?" and I hope it helps you. Wishing you good health!

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