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DNA worldwide can print your genetic code on your shirt, help figure out who's related to who and they claim they can tell a new Mother if their kid is a boy or a girl 6 weeks in...
Once a woman has taken the test, she sends her sample directly to the company's laboratory for analysis and will receive the result in the post or can access it online using a protected password.The test looks for DNA from the baby in the mother's blood. If it picks up a Y-chromosome, that means a baby boy can be "confidently" predicted.
If there is no Y-chromosome DNA, the company can state "with equal confidence" that the baby will be a girl, the company says.
BBC article - Link & DNA Worldwide (kits).
My wife an I recently found out that we're going to have a baby, and had seen something talking about this last week. Now she's a PhD student in microbiology, and tells me that this kit is just doing a PCR reaction with a simple set of primers that are, like the article states, trying to amplify DNA from a Y chromasome. She says that the primers themselves would cost about $16 from a lab supply company. Now I'm thinking that with the $10 PCR kit described earlier in the month, you could put together this test kit for under $30 and do it all in your own home and get your results in under an hour. (if the other article is correct about it's processing time for the PCR)
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Presence or absence of a Y chromosome doesn't tell the whole story, as there's more genetic sexes than XX and XY. Turner's syndrome, Kleinfeldter's syndrome, androgen-insensitive XY, etc.
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