Ask your query and problems from Dr. Ajay Sharma
What is PSA?
PSA (prostate-specific antigen) is a protein produced by the cells of the prostate. PSA is found in very high concentrations in the ejaculate and only a small portion leaks into the bloodstream. The concentration of PSA in the blood provides an estimate of the risk of having prostate cancer.This is the reason for measuring PSA in asymptomatic men.
PSA concentration between 2.5 and 10.0 ng/ml is associated with a probability cancer on a biopsy of approximately 25%. Like any test, PSA must be interpreted in context, as infections, medications, and other factors can cause fluctuations in the blood concentrations. PSA is not a diagnostic test. To diagnose prostate cancer today requires a biopsy.
ALL MEN ABOVE 50 YEARS OF AGE SHOULD GET PSA DONE. Biopsy is generally taken if PSA show high on 2 reports.In doubtful cases, free PSA estimation is done and its % in relation to total PSA is calculated. Less than 10% is strong indicator of cancer.
All men over 50 years should get PSA done every year