A simple genetic test could show whether you're likely to get a serious disease, and it only costs $99. The test is the brainchild of Anne Wojcicki, the founder of 23andMe, a genetic testing company. 23andMe believes genetic testing can make all of us healthier. The process is simple. The company has users spit into a cup and then sends the sample for testing. They are able to look for more than 250 health conditions and traits. The results cover everything from lactose intolerance to Alzheimer's disease.