The first test I underwent was an EKG (electrocardiogram), which has been the front line test of cardiac diagnostics for many years.

FORBES: My Visit with a Cardiologist, and What You Should Know About Your Heart

"We have a policy where if you carry our diagnostics, we ask you to focus exclusively on our line, " he explains, adding that he will release a better system next year that won't require a separate centrifuge.

FORBES: 200 Best Small Companies