" After they hung up, Hunter took aside Renaat Van den Hooff, who was in charge of the pilot on the Walgreens side, and told him something just wasn’t right. The red flags were piling up. First, Elizabeth had denied him access to their lab. Then she’d rejected his proposal to embed someone with them in Palo Alto. And now she was refusing to do a simple comparison study. To top it all off, Theranos had drawn the blood of the president of Walgreens’s pharmacy business, one of the company’s most senior executives, and failed to give him a test result "

― John Carreyrou , Bad Blood: Secrets and Lies in a Silicon Valley Startup