But Theranos, and Holmes, has also been surrounded by a dark cloud of suspicion. Critics have asked for proof that the company's technology actually works, and that its results are accurate. Holmes — the world's youngest self-made woman billionaire at 31 — and her PR team have mainly responded by citing intellectual property concerns and suggesting that the seeds of doubt have been sown by incumbent laboratory companies such as Quest and Laboratory Corporation.
In a series of tweets Elizabeth Holmes also counters Mr Herper's report.
There were other bizarre revelations in the Journal piece. Some parts of the Theranos website, which carried claims Carreyrou was probing, disappeared during his investigation. One former employee, Dr. Ian Gibbons, killed himself, and after the reporter spoke to his widow, "a lawyer representing Theranos sent her a letter threatening to sue her if she continued to make 'false statements' about Ms. Holmes and disclose confidential information."
Theranos, one of the hottest new biotech startups, has a huge credibility problem - Vox