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Finding out if your little one is a boy or girl is an exciting moment in pregnancy. With Dr Penman, you can find out baby’s gender as early as 11 weeks. Read on for more information on how gender is determined and assessed.

The Science Behind Gender

The sex chromosomes are the indicators of gender. Typically, girls have two X chromosomes (XX), whilst boys have one X and one Y chromosome (XY). Sex chromosome arrangements that differ from the norm can occur, and tend to cause various physical abnormalities and/or learning difficulties, such as Klinefelter syndrome (XXY) in males or Turner syndrome (X) in females.

When a genetic man (XY) and woman (XX) conceive a child together, they each supply one chromosome in the fertilization process.

As the woman can supply only X chromosomes, it is the chromosome provided by the man that determines the resulting genetic gender of the child.

How Can Dr Penman Tell If I Am Having A Boy or A Girl?

At the Gender Scan, Dr Penman is looking for two signs:

  • A ‘snail’ sign, indicating that your baby is a boy
  • A ‘Big Mac’ sign – like three little lines stacked on top of each other – indicating that your baby is a girl
When Can I Find Out My Baby’s Gender?

You can have a Harmony Non Invasive Prenatal Test from 10 weeks at a cost of £450.00

At the Nuchal Scan with Early Gender Scan with Dr Penman, you can find out the gender of your baby from 11 weeks with 75% accuracy. From 14 weeks, it’s possible to have an Early Growth with Gender Scan. The accuracy of the gender assessment increases as pregnancy progresses.

    • 11 weeks –  75% accuracy
    • 12 weeks – 80-90%
    • 13 weeks – 95% (this is also the best time for your Nuchal Scan, which you can have at the same appointment as your gender scan)
    • 14 weeks – 97%
  • 16 weeks  – 99.9%

All baby scans are held at the Spire Alexandra Hospital in Walderslade, Kent.