OPKO Health, Inc. (NYSE:OPK) announced the availability of the 4Kscore TM Test through its CLIA-accredited OPKO Lab in Nashville, TN. The laboratory-developed test is designed to enhance the prostate biopsy decision making process that, in the United States, leads to approximately 1 million biopsies being performed annually, with 80% of the results indicating no cancer or a low-grade cancer. The 4Kscore TM Test will help to reduce unnecessary prostate biopsies by providing information on the risk (probability) of having high-grade prostate cancer. The 4Kscore TM Test was developed by OPKO Lab, a division of OPKO Health, and tested in collaboration with 26 Urology centers across the United States from October 2013 to March 2014. Results showed that the 4Kscore Test TM was highly accurate for predicting the presence of high-grade cancer (Gleason score 7 or higher) prior to prostate biopsy. The full data from the blinded, prospective U.S. clinical validation study will be presented at the AUA Annual Meeting in Orlando, FL on May 18 th at Plenary Session I. “We are pleased to offer the 4Kscore Test TM at OPKO Lab to provide Urologists with new information to inform them of the risk of a patient’s having high-grade prostate cancer and help clarify the decision process surrounding prostate biopsy,” said David Okrongly, President of OPKO Diagnostics. “We believe the 4Kscore Test TM will be an important benefit for Urologists and their patients and may lead to lower overall healthcare costs,” said Phillip Frost, M.D., OPKO's Chairman and Chief Executive Officer. About the 4Kscore™ Test The 4Kscore™ Test measures the blood plasma levels of four different prostate-derived kallikrein proteins: Total PSA, Free PSA, Intact PSA and Human Kallikrein 2 (hK2). These biomarkers are combined with a patient's age, Digital Rectal Exam (DRE) status (nodule / no nodule), and prior biopsy status (yes / no) using a proprietary algorithm to calculate the risk (probability) of finding a Gleason Score 7 or higher prostate cancer. The 4Kscore Test TM was developed by OPKO Lab, a division of OPKO Health, Inc., and will be performed at OPKO Lab’s CLIA-accredited facility in Nashville, Tennessee. The four kallikrein panel of biomarkers utilized in the test is based on over a decade of research conducted by scientists at Memorial Sloan Kettering Cancer Center and leading European institutions. The information provided by the 4Kscore Test TM can add new information to the shared decision making discussion between a Urologist and patient in determining the advisability of a prostate biopsy. About Prostate Cancer In 2014, over 233,000 new cases of prostate cancer will be identified and 29,480 men will die from the disease according to estimates released by the National Cancer Institute, making it the second most deadly cancer in U.S. men. Prostate cancer is usually first detected by elevations in serum PSA. However, PSA level is often elevated for reasons unrelated to prostate cancer. Although an elevated PSA level often leads to biopsy, about 80% of all prostate biopsies performed are either negative or indicate a low likelihood of high-grade cancer.