A blood test that could determine the sex of your child before seven weeks which could be a great way to screen for sex-linked genetic conditions.
For example, if the test was used by 100 couples, only a few of them would be left still not knowing with certainty what the sex of their unborn child was.
Professor Richard Fleming, of the Glasgow Centre for Reproductive Medicine, said it was important to have confirmation that the tests are valid.
"If you can test from seven weeks of pregnancy then that means knowing the sex a month before a scan could tell you, which is helpful." Though there is worry in the maternity wards that this test could be used in a social aspect, which the test was not designed for.