The plaintiff says he had normal blood test results, so his doctor recommended maintaining his current medication regime. Less than a month later he had a heart attack. KQED: Lawsuit: Faulty Theranos Test Results Contributed To Heart Attack A lawsuit filed in Arizona federal court Friday claims that faulty Theranos blood test results contributed to a patient's heart attack. The suit, which seeks class-action status, accuses the blood-testing company and/or its partner, Walgreens Boots Alliance, of consumer fraud, negligence, breach of contract and civil conspiracy, among other causes of action. According to the suit, the plaintiff, identified only by the initials R.C., had blood drawn at a "Theranos Wellness Center" in a Walgreens pharmacy in Sun City West, Arizona, in February 2015.