Theranos Voids Two Years of Edison Blood-Test Results

Theranos Inc. has told federal health regulators that the company voided two years of results from its Edison blood-testing devices, according to a person familiar with the matter.

The Edison machines were touted as revolutionary and were the main basis for the $9 billion valuation attained by the Palo Alto, Calif., company in a funding round in 2014. But Theranos has now told regulators that it threw out all Edison test results from 2014 and 2015.

The company has told the Centers for Medicare and Medicaid Services that it has issued tens of thousands of corrected blood-test reports to doctors and patients, voiding some results and revising others, according to the person familiar with the matter.

That means some patients received erroneous results that might have thrown off health decisions made with their doctors.