News: Breast Cancer Test Rates Drug Therapy Candidates (HealthDay) Breast Cancer Test Rates Drug Therapy Candidates (HealthDay) ================================================================================ by team on 08 July, 2008 06:47:01 HealthDay - TUESDAY, July 8 (HealthDay News) -- The U.S. Food and Drug Administration has approved a genetic test designed to evaluate whether a person with breast cancer is a good candidate for treatment with the drug Herceptin (trastuzumab).