Blood-testing startup Theranos says it is being investigated

Theranos said in a letter Monday that investigations or inspections have been opened by the Centers for Medicare and Medicaid Services, the Securities Exchange Commission and the U.S. Attorney's Office for the Northern District of California.

Founder and CEO Elizabeth Holmes told NBC News in an interview that aired Monday that she was "devastated" that the company didn't catch and fix issues sooner after the Centers for Medicare and Medicaid Services found that one of its labs had unqualified workers.