EPIC Test Name: PSA FREE
Collect specimen in SST tube. Allow to clot. Centrifuge and store refrigerated. Transport to lab.
Sample Volume: 1 mL
Minimum Volume: 0.2 mL (Repeat testing is not possible with this specimen volume.)
Stability (collection to time of analysis/testing):
- Refrigerated: 24 hours
- Frozen: 1 year
The free prostate-specific antigen percentage is an aid in distinguishing prostate cancer from benign prostatic conditions in men age 50 and older with a total PSA between 3 and 10 ng/mL and negative digital rectal examination findings. Prostatic biopsy is required for the diagnosis of cancer.
Solid-phase, sequential chemiluminescent immunometric assay
1-3 business days
< 0.7 ng/mL
Monday - Friday