Theranos lab chief says Elizabeth Holmes offered ‘implausible’ explanation for odd findings

Kingshuk Das testifies that former CEO was resistant to critiques of company's devices

The former lab director of Theranos has testified that Elizabeth Holmes gave implausible" excuses for apparent failures in the company's tests and personally pushed back against his concerns about its signature blood testing machines.

Kingshuk Das testified on Tuesday in the high-profile case as the government heads into its 10th week of arguments against the former CEO, who faces accusations that Theranos knowingly defrauded clients and investors about its capabilities.