I initially did genetic testing through my breast oncologist and was BRCA2 positive. So when my son turned 35 and had to do testing through color.com as suggested by my breast oncologist, I found they were testing for 30 cancer mutations plus other types of mutations (heart, enzymes to metabolize drugs). I had only been tested for 10-12 types so I did the testing with my son (mail saliva with their kit) and that is how I found out both my son and I have the CHEK2 mutation as well. I think it's about $250 for the package now. At the time, I was a family add-on for only $50 more, but I'm not sure they have that special offer anymore. If your doctor doesn't submit a test order, one of their doctors will. Someone will go over the test with you and then you have the option to ask a genetic counselor more questions (at least 5 years ago that's how it worked).