Last spring, we wrote about a warning letter the United States Food & Drug Administration (“FDA” or the “Agency”) issued to Agena Bioscience Inc. (the “Agena Warning Letter”)[1] for allegedly promoting its diagnostic product (which was labeled for research use only “RUO” and therefore, not cleared or approved by FDA) for clinical purposes in violation of the U.S. Food, Drug, and Cosmetics Act (the “FDCA”).[2] The Agena Warning Letter – the first issued to an RUO product manufacturer in over five years – left the…