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How Much Can You Learn From a Home DNA Test?

One reporter has her DNA analyzed and finds that genetic testing isn't an exact science.

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This story is as intimate as I will get with you. In it, I unzip my genes and give you a sneak peek at my biological destiny. I took three DNA tests from three different DNA testing companies—one from a firm called Navigenics, one from 23andMe, and one from deCODE genetics.

I was so hyped up about getting my DNA analyzed, I didn’t really think about the consequences of having all that information at my fingertips. Perhaps that’s typical of a 25-year-old. I’m working at my first job out of college and living in New York City. There’s plenty in the here and now to worry about: The homeless man deliberately running into me on my way to work. Living on a shoestring budget. Finding Mr. Right.

Some of the test results from the three companies matched up with one another.

Some didn’t.

But I’m getting ahead of myself. Let ...

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