Prostate-specific Antigen (PSA), Free:Total Ratio Reflex
The Prostate-specific Antigen (PSA), Free:Total Ratio Reflex test is used to measure the percentage of free (uncomplexed) PSA relative to the total amount of PSA in men with serum PSA concentrations between 4.0-10.0 ng/mL. This procedure does not provide serial monitoring; it is intended for one-time use only.
Test Includes: Total PSA; free PSA when total is between 4 and 10. If reflex testing is performed, additional charges/CPT code(s) may apply.
Specimens should not be drawn immediately after digital rectal examination (DRE), prostatic massage, or transrectal ultrasound (TRUS). PSA sampling should not be performed for at least six weeks after prostatic biopsy.