Prostate-specific antigen (PSA) is a serine protease produced by the prostate ductal epithelium and is usually checked by blood sampling. Prostate-specific antigen screening indicators include total prostate-specific antigen (tPSA) and free prostate-specific antigen (fPSA). tPSA normal values are 0-4ng/ml.
Prostate-specific antigen is important in the diagnosis of prostate cancer. A total prostate-specific antigen greater than 4ng/ml should be noted, and the patient needs to be examined and evaluated in detail to clarify the presence of prostate cancer, and a total prostate-specific antigen greater than 10ng/ml should be highly suspicious of the possibility of prostate cancer.
Of course, prostate-specific antigen results are influenced by many factors. The results of urology-related operations such as catheterization, cystoscopy, rectal examinations, transrectal ultrasound, prostate massage, and prostate puncture biopsies can all cause varying degrees of prostate-specific antigen elevation. The prostate specific antigen can also be elevated by inflammatory diseases of the prostate gland, and the elevation is more pronounced during the acute inflammatory phase. The age of the patient and the volume of the prostate can also affect the prostate specific antigen results. Therefore, the influence of these factors should be fully considered when analyzing the prostate-specific antigen results.