Blood lab Theranos under federal investigation

Theranos, the blood testing company that once was the darling of investors and media, is under federal investigation that it misled investors and partners about the readiness of its industry-disrupting technology. The Palo Alto, Calif., startup is facing scrutiny from the Securities and Exchange Commission as well as the U.S. Attorney's Office for the northern district of California, the company acknowledged in a memo sent to its partners Monday.