Prostate-Specific Antigen (PSA), Free » Pathology Laboratories » College of Medicine

Additional Information:

EPIC Test Name: PSA FREE

CPT Code(s):

84154

Collection Procedure:

Collect specimen in SST tube. Allow to clot. Centrifuge and store refrigerated. Transport to lab.

Specimen Requirements:

Type: Serum
Container/Tube: SST
Sample Volume: 1 mL
Minimum Volume: 0.2 mL (Repeat testing is not possible with this specimen volume.)
Storage: Refrigerate
Stability (collection to time of analysis/testing):

Refrigerated: 24 hours
Frozen: 1 year

Use:

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.

Methodology:

Solid-phase, sequential chemiluminescent immunometric assay

Reported:

1-3 business days

Reference Values:

< 0.7 ng/mL