CPT® Code 84154

Prostate specific antigen (PSA) is a protein that is produced by normal prostate cells and is found in the serum. The measurement of PSA is significant in the context of prostate health, as it exists in two forms: free PSA and complexed PSA. Free PSA refers to the portion of the antigen that is not bound to other proteins, while complexed PSA is the portion that is bound to proteins in the blood. The measurement of free PSA, as indicated by CPT® Code 84154, is often performed alongside total PSA measurements to provide a more comprehensive understanding of prostate health. Total PSA encompasses both free and complexed forms of the antigen. Elevated levels of total PSA can indicate various prostate conditions, including benign prostatic hyperplasia (BPH), acute bacterial prostatitis, and prostate cancer. However, total PSA alone is not definitive for diagnosing prostate cancer. The measurement of free PSA can help differentiate between benign and malignant conditions, as higher levels of complexed PSA are more suggestive of prostate cancer. Therefore, the assessment of free PSA is a valuable tool in the evaluation of prostate health and the management of prostate-related diseases.