Specimen Type: Serum
Container: 1 Serum Separator Tube (SST)
Preferred Vol: 2.00 mL
Min Vol: 1.00 mL
Immunochromatographic Membrane Assay (ICMA)
Monday - Sunday
The percent free PSA is inversely proportional to the risk of prostate cancer. Elevated total PSA and low % free PSA indicate an increased likelihood of finding prostate cancer. Conversely, low total PSA and elevated % free PSA indicate a decreased likelihood of finding prostate cancer. Serial measurements of PSA are useful in determining recurrence of prostate cancer after treatment.