This seems to be a common thread in the stories I've read about Theranos, an almost pathological inability to provide basic information upon request. I can only guess that Holmes' notion of open and transparent communication is defined very differently from what most people would consider it to mean.
A big warning sign to me is also the bizarre collection of company reviews on Glassdoor [1]. It's really fascinating to me that anybody would even consider turfing their own company's reviews with this kind of ham fisted, single voice corporate speak nonsense. I wonder who inside the company is responsible for writing all of these? Holmes herself? Regardless, it's a really fascinating look into how Holmes has prioritized things.
1 - https://www.glassdoor.com/Reviews/Theranos-Reviews-E248889.h...