SAN JOSE, CALIF. — The first patient to take the stand in trial of former Theranos CEO Elizabeth Holmes said that the company’s blood test inaccurately showed she was suffering a miscarriage when in fact she had a healthy pregnancy.

Brittany Gould testified Tuesday, having miscarried twice before. She said that after discovering she was pregnant, she had taken a Theranos blood-test in September 2014.

Audra Zuchman was Gould’s nurse practitioner and she presented alarming results after reviewing Theranos’ hCG tests, which measure a pregnant hormone.

Gould, who was getting emotionally on the podium, said that Audra Zuchman had told her that her numbers were falling and she believed I was having miscarriages.

Gould miscarried after two Theranos blood tests hCG. Two and four days later, however, Gould’s pregnancy was confirmed by Quest Diagnostics tests. Her baby was healthy.

Brittany was informed by me that this looked like a unviable pregnancy. Zuchman later testified that there was no medical reason for her loss. Zuchman also stated, “There isn’t any medical explanation in pregnancy loss for value to increase from 100 back to the thousands or even to rise at all.”

Zuchman stated that she had stopped sending her patients to Theranos after filing a complaint. Zuchman recalled feeling uncomfortable about continuing her patients’ use of it as a provider.

Gould said that, after she gave birth to her son, she had never used any Theranos product. She said, “You cannot provide accurate patient treatment with incorrect results.”

Holmes, who is being charged with wire fraud and conspiring to commit wirefraud in connection to what the prosecutors describe as a multimillion-dollar scheme to defraud patients and investors, faces twelve charges. Holmes has pleaded guilty.

With the vision of revolutionizing healthcare, she was the one-time genius of Silicon Valley. She dropped out of Stanford when she was 19 years old. She promised that Theranos would run hundreds of test using just one finger-prick. John Carreyrou, a former Wall Street Journal reporter exposed how blood-testing technology failed to meet expectations in 2015.

Among the government’s next witnesses is Justin Offen, an employee from PricewaterhouseCoopers, who will testify about private text messages between Holmes and Balwani. The prosecution claimed they had 12,000 text messages between them, but only a portion will be shown to the jury.