释义 |
PSA velocity PSA velocitya measure of the rapidity of change in a person's PSA level.PSA velocity Prostate-specific antigen velocity. A triggering factor for assessing PSA levels in the decision to refer a patient for a prostate biopsy. A PSA velocity of greater than 75 ng/mL/year should trigger a biopsy referral. Cons Requires PSA measurements over many years and does not factor in variability of the assay methodologies.PSA ve·loc·i·ty (vĕ-los'i-tē) A measure of the rapidity of change in a person's level of prostate-specific antigen. PSA velocity The rate of rise in the level of prostate-specific antigen. An increase in the level by more than 2.0 nanograms per millilitre in the year prior to the diagnosis of prostate cancer suggests a relatively high risk of death from the disease in spite of radical prostatectomy. |