Gender Scans - The Facts

A number of parents are keen to know the sex of their baby before it's born

. It is fairly easy to tell gender by the 20 week scan, as long as the sonographer gets a good view. The difference between boys and girls is pretty apparent at this point. Provided there is plenty of amniotic fluid around your baby and it doesn't have its feet tucked up between its legs, a third trimester scan can generally show its sex and as your gestation progresses, the difference becomes yet clearer.

In the early weeks, however, it is not so easy. All embryos look the same even though their gender would have already been genetically determined at conception.

If you want to guess the gender of your baby there are tons of Old Wives tales. The rate of the baby's heartbeat is a common one that is supposed to differentiate between a boy and girl. 140 BPM appears to be the generally used threshold, or try to tell between a galloping horse and a steam train. But surely its common sense a baby's heartbeat is frequently irregular during development. If the baby is asleep or having a subdued time then it will be slower than when the baby is alert and active. This is all very common. So a one off heartbeat reading won't give you any information since you probably don't know what the baby is doing at the time. Carrying the baby all up front means boy and on the hips mean girl is another well known one. How can this be? Women are all different shapes and sizes, what does it mean if there is a nice equal spread all the way round?

It is possible, from about 11 weeks to see a slight difference between the sexes. Studies show that early gender detection is a pretty hit and miss affair. Early research showed that, if babies that were lying in a position to see, very experienced sonographers using top-of-the-range scan machines got the sex right in just 70 per cent of cases at 11 weeks, and in merely over nine out of 10 cases at 12 weeks. In a more recent study, sonographers could only accurately differentiate the sex in 46 per cent of babies at 12 weeks and 80 per cent at 13 weeks. A gender scan this early may not be accurate.

Being told the sex and then finding out later that it was incorrect can be extremely distressing. It is best to wait until your mid-pregnancy, detailed scan unless you need to know the gender because you have a family history of gender-linked genetic problems. The probability of getting the sex right then is a lot higher.

As the pregnancy develops, the genitalia become more and more distinguishable. Adequate amniotic fluid helps the sonographer see things better; and hopefully, your baby's legs aren't folded into their chest.

As the sonographer can see more clearly, experts suggest going at least halfway through your gestation. A gender scan is commonly performed after at least 18 weeks and determines the gender of your baby. A reputable company should spend time establishing the sex so that they can be fairly positive in their decision, though there are no 100% guarantees with ultrasound. After all, it's no joke to buy blue only to find out it should have been pink!

by: karlkt6yha

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