The Prostate Health Index (PHI) is a blood test that aids in the detection of prostate cancer. It combines three different measurements – total PSA (Prostate-Specific Antigen), free PSA, and a protein called [-2]proPSA – to create a single PHI score. This score helps doctors assess the risk of prostate cancer in men with elevated PSA levels.

PHI is more accurate than the traditional PSA test alone, as it can better differentiate between prostate cancer and benign conditions such as prostatitis or benign prostatic hyperplasia (BPH). By incorporating the PHI score into the decision-making process, doctors can reduce unnecessary biopsies and better identify men who may need further evaluation for prostate cancer.