In the largest qui tam settlement paid by a medical lab company, Quest Diagnostics settled for $302 million with the U.S. government for allegedly distributing medical kits despite complaints of inaccurate test results. The faulty tests put hundreds of thousands of dialysis patient’s health at risk. In some cases the tests resulted in patients receiving unnecessary surgery or treatment. The tests were manufactured and sold between 2000 and 2006.

A California businessman and biochemist was the original whistleblower on the investigation.